goose.art
+186
day10/Cargo.lock
+186
day10/Cargo.lock
···
···
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+7
day10/Cargo.toml
+7
day10/Cargo.toml
+3
day10/smallinput.txt
+3
day10/smallinput.txt
+116
day10/src/main.rs
+116
day10/src/main.rs
···
···
1
+
use button::Button;
2
+
use clap::Parser;
3
+
use switchboard::SwitchBoard;
4
+
5
+
mod button;
6
+
mod switchboard;
7
+
8
+
#[derive(Parser)]
9
+
struct Args {
10
+
#[clap(short, long)]
11
+
file: String,
12
+
#[clap(short, long)]
13
+
debug: bool,
14
+
}
15
+
16
+
fn mash_buttons(switchboard: &mut SwitchBoard, buttons: &[Button]) -> usize {
17
+
let mut total_presses = 0;
18
+
while !switchboard.is_solved() {
19
+
if total_presses > 100 {
20
+
println!("Max presses reached");
21
+
break;
22
+
}
23
+
for i in 0..switchboard.size {
24
+
if !switchboard.is_correct(i) {
25
+
// println!("Lightbulb {} is incorrect", i);
26
+
let mut valid_buttons = buttons
27
+
.iter()
28
+
.filter(|b| b.toggles(i))
29
+
.collect::<Vec<&Button>>();
30
+
valid_buttons.sort_by(|a, b| a.targets.len().cmp(&b.targets.len()));
31
+
let distance = switchboard.dist_from_solution();
32
+
println!(
33
+
"Current button options: {:?}, distance: {}",
34
+
valid_buttons, distance
35
+
);
36
+
for btn in valid_buttons.iter() {
37
+
btn.press(switchboard);
38
+
total_presses += 1;
39
+
if switchboard.dist_from_solution() < distance {
40
+
println!("Toggled button {:?}", btn);
41
+
println!("Switchboard: {}", switchboard);
42
+
break;
43
+
} else {
44
+
btn.press(switchboard);
45
+
}
46
+
}
47
+
}
48
+
}
49
+
}
50
+
51
+
total_presses
52
+
}
53
+
54
+
fn solve_switches(switchboard: &mut SwitchBoard, buttons: &[Button]) -> usize {
55
+
let mut opstack: Vec<Button> = Vec::new();
56
+
57
+
while !switchboard.is_solved() {
58
+
if opstack.len() > 10 {
59
+
println!("Failed in loop, {:?}", opstack);
60
+
panic!("Too many operations");
61
+
}
62
+
println!("Switchboard: {}", switchboard);
63
+
println!("Current state: {:?}", opstack);
64
+
// find first switch that is incorrect
65
+
let first_wrong = switchboard.first_wrong();
66
+
// if we find a wrong switch, get its index
67
+
if let Some(index) = first_wrong {
68
+
// find all buttons that toggle this index
69
+
let mut valid_buttons = buttons
70
+
.iter()
71
+
.filter(|b| b.toggles(index))
72
+
.collect::<Vec<&Button>>();
73
+
// don't press the same button twice in a row
74
+
valid_buttons.retain(|b| !opstack.contains(b));
75
+
if !valid_buttons.is_empty() {
76
+
opstack.push(valid_buttons[0].clone());
77
+
valid_buttons[0].press(switchboard);
78
+
} else {
79
+
let first_button = opstack[1].clone();
80
+
opstack.clear();
81
+
switchboard.reset();
82
+
println!(
83
+
"Reset switchboard, first operation will be {:?}",
84
+
first_button
85
+
);
86
+
87
+
first_button.press(switchboard);
88
+
opstack.push(first_button.clone());
89
+
}
90
+
}
91
+
}
92
+
opstack.len()
93
+
}
94
+
95
+
fn main() {
96
+
let args = Args::parse();
97
+
let file = std::fs::read_to_string(&args.file).expect("Failed to read file");
98
+
let lines = file.lines();
99
+
100
+
for line in lines {
101
+
let tokens = line.split_whitespace().collect::<Vec<&str>>();
102
+
let mut switchboard = SwitchBoard::new(tokens[0]);
103
+
let mut buttons = Vec::new();
104
+
105
+
for button_str in tokens[1..tokens.len() - 1].iter() {
106
+
let button: Button = button_str
107
+
.parse()
108
+
.expect("Button expected to be in format (a,b,..,z).");
109
+
buttons.push(button);
110
+
}
111
+
112
+
solve_switches(&mut switchboard, &buttons);
113
+
}
114
+
115
+
println!("{}", file);
116
+
}
+75
day10/src/switchboard.rs
+75
day10/src/switchboard.rs
···
···
1
+
use std::fmt::{Display, Formatter};
2
+
3
+
pub struct SwitchBoard {
4
+
lights: Vec<bool>,
5
+
target: Vec<bool>,
6
+
pub size: usize,
7
+
}
8
+
9
+
impl SwitchBoard {
10
+
pub fn new_empty(size: usize) -> Self {
11
+
SwitchBoard {
12
+
lights: vec![false; size],
13
+
target: vec![false; size],
14
+
size,
15
+
}
16
+
}
17
+
18
+
pub fn new(schema: &str) -> Self {
19
+
if schema.starts_with('[') && schema.ends_with(']') {
20
+
let size = schema.len() - 2;
21
+
let lights = vec![false; size];
22
+
let target: Vec<bool> = schema[0..size].chars().map(|c| c == '#').collect();
23
+
assert_eq!(lights.len(), target.len());
24
+
SwitchBoard {
25
+
lights,
26
+
target,
27
+
size,
28
+
}
29
+
} else {
30
+
panic!("Invalid schema for switchboard");
31
+
}
32
+
}
33
+
34
+
pub fn reset(&mut self) {
35
+
self.lights = vec![false; self.size];
36
+
}
37
+
38
+
pub fn is_correct(&self, index: usize) -> bool {
39
+
self.lights[index] == self.target[index]
40
+
}
41
+
42
+
pub fn is_solved(&self) -> bool {
43
+
self.lights == self.target
44
+
}
45
+
46
+
pub fn toggle(&mut self, i: usize) {
47
+
self.lights[i] = !self.lights[i];
48
+
}
49
+
50
+
pub fn dist_from_solution(&self) -> usize {
51
+
self.lights
52
+
.iter()
53
+
.zip(self.target.iter())
54
+
.filter(|&(a, b)| a != b)
55
+
.count()
56
+
}
57
+
58
+
pub fn first_wrong(&self) -> Option<usize> {
59
+
self.lights
60
+
.iter()
61
+
.zip(self.target.iter())
62
+
.enumerate()
63
+
.position(|(_, (a, b))| a != b)
64
+
}
65
+
}
66
+
67
+
impl Display for SwitchBoard {
68
+
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
69
+
for light in self.lights.iter() {
70
+
write!(f, "{}", if *light { '#' } else { '.' })?;
71
+
}
72
+
writeln!(f)?;
73
+
Ok(())
74
+
}
75
+
}
+186
day11/Cargo.lock
+186
day11/Cargo.lock
···
···
1
+
# This file is automatically @generated by Cargo.
2
+
# It is not intended for manual editing.
3
+
version = 4
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+
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+
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+
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+
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+
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+
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+
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+
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85
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86
+
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+
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88
+
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+
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100
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101
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[[package]]
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name = "day11"
103
+
version = "0.1.0"
104
+
dependencies = [
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"clap",
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107
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[[package]]
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name = "heck"
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[[package]]
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+
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+
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+7
day11/Cargo.toml
+7
day11/Cargo.toml
+553
day11/input.txt
+553
day11/input.txt
···
···
1
+
you: wms hkw ove qba ats
2
+
imt: swz aev ams bhg yir
3
+
grh: fph cuq pcx
4
+
yae: qiu mef
5
+
luf: zir jdx jmg
6
+
ypt: ahf wov hai
7
+
rlf: haj yxm
8
+
xls: qnw ppg
9
+
ggr: xmh vka
10
+
xgr: hlc mzm
11
+
mze: ljj ppg ysn qnw
12
+
xfb: diw cxx vlb mgf
13
+
wms: xcd hni
14
+
lpm: dap
15
+
wov: rbx skx ztu
16
+
oop: djs rfy
17
+
cnb: haj
18
+
xaz: tur kmd wsw
19
+
svr: qnf jjf xjh omn
20
+
vya: mgq qqj asn
21
+
zuk: xvf lff cju
22
+
gvw: xfk jje gir
23
+
ztu: hlr lka
24
+
jmg: dap tei
25
+
hxf: mjd vns mlo
26
+
dsq: vkw vtp cwm
27
+
jpr: izt esf
28
+
qba: cju xvf lff fcg
29
+
zyt: yek imd qsl
30
+
wke: out
31
+
hbz: nnz qck
32
+
xru: wuh
33
+
wsw: mgq
34
+
ifh: ejn pif
35
+
xpt: ouy
36
+
elr: izi wke ljd oim
37
+
bbg: xnn ove hbz gkv fdo frn vfi uxl rrt wms dcs vkn
38
+
bye: jna xgr vcd
39
+
ceb: cwa
40
+
msa: hly gir
41
+
gzq: byz
42
+
ufd: ihs ped
43
+
jev: wbn
44
+
gix: wdt
45
+
see: nfq
46
+
rnu: nei wdt azn
47
+
axr: oop pgu
48
+
efu: aai ejn
49
+
cnf: oaw ryk wpb
50
+
vzq: lka hlr zkr aps
51
+
ehj: out
52
+
xup: esf
53
+
tak: wld xob
54
+
omn: xfb fry tvg fll pwt oka vwe rpp bja miw boq elm
55
+
kmj: bsl xzx tco
56
+
hpe: une tvs
57
+
xzx: bbg gia fwk you
58
+
qiu: bdv nkt uco
59
+
sar: boc tfa qvo vzq
60
+
wur: pdz wld xob
61
+
zvs: bbg
62
+
bez: kow tvs hju une
63
+
esf: out
64
+
taz: nft
65
+
fgw: mzm hlc
66
+
wqf: mka gko
67
+
zab: wuh xzx
68
+
ars: mjn jmd
69
+
pmn: uug vzx
70
+
lay: you bbg fwk
71
+
imd: see
72
+
rak: out
73
+
ixj: kow tvs une
74
+
pka: txb
75
+
wrm: sjq kme
76
+
bik: aps
77
+
slz: tvs kow une
78
+
wxx: nfe
79
+
hju: ypt xls swg wci wth
80
+
dcs: qvu
81
+
yuo: xhd ryk
82
+
ucg: lpm zaw zir
83
+
vtp: out
84
+
znh: vya phe wsw kmd
85
+
slu: ulf msa gvw amb nkv
86
+
qeh: yor
87
+
ing: cji hlb
88
+
ogh: gfk haj yxm
89
+
mlo: ptn mmq alf nft
90
+
nhx: skx
91
+
wrf: jkp fhl
92
+
ihw: cwa rlf xbu
93
+
yut: hjx xmm
94
+
drp: vkw vqp vtp
95
+
ywc: com wxx ize
96
+
bsl: fwk gia zvu bbg
97
+
uhu: foi wrm qnt
98
+
mcp: vqp cwm
99
+
lce: nak uzi
100
+
vax: auy fgw cwr
101
+
fdo: qck lvi nnz
102
+
lmn: han obk fuu
103
+
ebx: nko kdd boe vht
104
+
cdt: qiu
105
+
oka: uug lkh
106
+
zny: sef dxs fac elg
107
+
bxj: gcd huk
108
+
azn: tth aps
109
+
aps: ufd ogt bxj jaf zpc ptb jev
110
+
pvr: mjd vns
111
+
kxq: vns
112
+
fry: uug
113
+
tth: hxe jev zpc bio yba enr mbw ujb bxj ogt ryr dkw slu
114
+
ize: nfe hlc
115
+
vfi: lvi qck
116
+
qtx: xup ouy
117
+
qck: piz ohg
118
+
lft: ogh kgv
119
+
iur: dlh lcc
120
+
dqs: aps zkr hlr
121
+
xci: ahf bhk hai
122
+
ayn: tth hlr lka
123
+
frn: lff
124
+
fhh: lka tth zkr aps
125
+
jkp: fnj vbv
126
+
fka: fnj vbv
127
+
lcc: hju tvs
128
+
yrq: wrm
129
+
zaw: dap
130
+
ggb: pew lgw
131
+
vkw: out
132
+
nmm: ona ums vha xos
133
+
kak: out
134
+
ejn: ixj kyx
135
+
yba: ftb
136
+
hlb: vht
137
+
lka: ryr zrk ufd slu lfc ptb bio zpc cqz hxe mbw jaf dkw cxk jzg smv jev ogt bxj ujb enr yba
138
+
gfk: fmh znh aso qdl jdy qeh kot
139
+
arh: fft eae
140
+
gtw: tth lka
141
+
imk: pdz wld xob
142
+
mox: irm
143
+
fuu: ftn
144
+
nfe: cwe ndx etc qhv agt vzk dcm cmu oiu fwb ahr zgd mgz wyd byh ajh lkw fob rho sve sfj lce riq znt yut ogu
145
+
bdv: you fwk zvu bbg
146
+
asn: hju une
147
+
yas: pif ejn
148
+
cyr: fwa qpu mpw
149
+
wdt: lka
150
+
mef: bdv
151
+
ihs: gua
152
+
box: out
153
+
sqj: ehj
154
+
olv: dlh lcc rpb
155
+
hsh: rnu gix nfq dus
156
+
ifc: xup jpr
157
+
nko: you zvu fwk gia
158
+
oim: out
159
+
fwk: ove dcs hbz gkv cnt frn vzo brh rrt
160
+
djs: uco bdv nkt
161
+
pew: dsq sjy epu
162
+
vka: tvs kow hju
163
+
mbw: amb ulf msa gvw
164
+
mgz: zab xru pui kmj
165
+
lvp: zny mgf
166
+
bxp: hlc mzm
167
+
lgw: epu mcp sjy drp
168
+
mbu: out
169
+
jdx: dap tei
170
+
boq: lft
171
+
ltz: sjy mcp dsq
172
+
com: nfe
173
+
fll: pqr luf gko
174
+
obk: frk ftn
175
+
vht: zvu gia fwk
176
+
zyh: lgw mfj pew ltz
177
+
hni: xym ggb bkg
178
+
vsy: cdt dac yae
179
+
kfc: gou fpc
180
+
mka: zaw lpm jmg
181
+
uoh: fwa qpu
182
+
byu: rak mck
183
+
pwf: rcr
184
+
rxh: qtx
185
+
zxf: tco wuh
186
+
lvi: ohg kft dqx
187
+
mfj: drp
188
+
one: lka
189
+
qsj: pif
190
+
gko: jmg lpm jdx zaw zir
191
+
boe: zvu bbg gia fwk
192
+
pum: aps lka tth
193
+
tvs: wci wji zyt dhn hwr vwl wrf ojn rab
194
+
irl: gip
195
+
bqb: kjs qmn lft
196
+
qsl: see hsh
197
+
kyx: hju
198
+
the: yrq zco xcb uhu kbq
199
+
fob: gzq uzi osb
200
+
nfq: nei wdt azn
201
+
ams: afp
202
+
cwr: mzm
203
+
gia: xnn brh hkw hbz irl dcs zuk cnt gkv gbv
204
+
fmh: rxs xpf
205
+
ndx: hou uoh qdj vwt
206
+
fpc: hlc nfe
207
+
ysn: wjd zuj pum
208
+
cwa: yxm haj gfk
209
+
lfq: kak ujn ehj box
210
+
wth: imd
211
+
hjx: hlb ebx cji aak
212
+
vkn: hxf wax kxq
213
+
afp: dkm lyf
214
+
zgd: hjx
215
+
fph: bao ewp
216
+
riq: uoh hou qdj cyr vwt
217
+
ajh: akx axr
218
+
qvo: aps lka hlr tth zkr
219
+
vzk: zab xru pui kmj
220
+
wld: haj
221
+
xym: pew mfj vnu
222
+
akx: yae pgu oop cdt dac
223
+
mmq: jzt byu
224
+
nft: sdj byu
225
+
ppl: bxp gou fpc
226
+
dkm: yxm haj gfk
227
+
wgp: aps hlr zkr
228
+
vlb: sef
229
+
gou: hlc nfe mzm
230
+
vwe: ams aev
231
+
qpu: you bbg zvu fwk gia
232
+
rho: vwt hou
233
+
han: ftn frk elr
234
+
swp: dlh rpb
235
+
wji: sar xos vha ums
236
+
sef: wur
237
+
jje: szq kfc
238
+
xly: hlc nfe
239
+
lkw: uoh hou cyr
240
+
tvg: vzx uug
241
+
tat: ljj ppg ysn
242
+
fft: olv dyq
243
+
tym: yxm haj
244
+
cqz: gcd nmz
245
+
xbu: haj yxm gfk
246
+
enr: amb
247
+
sjd: iwf
248
+
piz: cuq pcx fph fgc
249
+
kgv: haj yxm
250
+
cwm: out
251
+
ogu: zxf zab pui
252
+
cxx: elg osd
253
+
qfb: une
254
+
ptb: ftb wbn
255
+
pui: bsl
256
+
zkr: dkw zrk jzg ryr cxk ufd lfc slu smv cqz bio ptb hxe jev ujb ogt jaf enr yba mbw
257
+
pif: vjs ixj
258
+
oaw: cir
259
+
qjd: uhu xcb zco yrq
260
+
pcx: otd sqj bao ewp
261
+
pwt: lkh vzx
262
+
szq: fpc bxp
263
+
lfc: jvd
264
+
haj: pwf yuo xdb znh aso asf aod kot srf fmh xaz qdl fzl
265
+
etc: ing
266
+
jdz: fwk gia zvu bbg
267
+
sjq: aps lka hlr tth zkr
268
+
cuq: ewp bao sqj
269
+
qun: cwr fgw fbj
270
+
pny: kjs lft qmn
271
+
fwa: gia bbg zvu you
272
+
mgf: fac
273
+
uxl: hni
274
+
vzo: cju xvf fcg lff
275
+
alf: byu sdj
276
+
xvf: pqj mgb isf pqf rxh
277
+
dyq: rpb lcc
278
+
yek: hca hsh
279
+
wcn: rxs
280
+
xcd: bkg ggb
281
+
jcv: yxm haj gfk
282
+
gqb: out
283
+
rab: hpj jkp
284
+
srf: efu qsj
285
+
kme: hlr aps
286
+
ahr: awd mcy
287
+
ljd: out
288
+
kmd: mgq
289
+
swz: enh tla
290
+
qnt: sjq gtw
291
+
pqj: zzp
292
+
bio: nmz gcd
293
+
pbv: hlr tth zkr
294
+
gip: taz
295
+
dus: wdt nei
296
+
vzx: ooc ceb ihw jix
297
+
tii: ovj jna xly
298
+
sve: uoh
299
+
fcg: isf mgb pqj pqf
300
+
irm: piz ohg kft grh
301
+
osd: xlv imk
302
+
ftn: ljd mbu izi
303
+
xpf: lne bez hpe wau
304
+
dlh: kow tvs une hju
305
+
boc: zkr hlr
306
+
lke: out
307
+
fbf: bbg zvu fwk you
308
+
zuj: hlr lka zkr tth
309
+
kwq: gia bbg
310
+
dac: mef djs
311
+
vcd: nfe
312
+
cju: pqf rxh
313
+
ayb: xbu rlf
314
+
jna: mzm hlc
315
+
hfg: mzm
316
+
ajl: fka hpj fhl
317
+
dxs: imk tak
318
+
vwv: kdb xpf
319
+
iwf: ytn pgr jdz
320
+
mcy: ytn
321
+
qhv: osb gzq
322
+
ove: hni gdl
323
+
gdl: xym zyh
324
+
fhl: vbv ebd
325
+
oiu: xmm ing
326
+
fbj: hlc
327
+
lff: isf pqj
328
+
rxs: hpe wau bez
329
+
hxe: vax
330
+
bkg: pew mfj
331
+
jaf: nmz huk
332
+
xhd: ggr cir how
333
+
yor: eae
334
+
zpc: qun nik
335
+
ovj: mzm
336
+
ixl: sjq kme gtw
337
+
hlr: bxj bio dkw cxk ryr jzg zrk
338
+
gbv: hni gdl
339
+
kdd: you zvu fwk
340
+
osb: lay zvs kwq fbf
341
+
tfa: tth zkr lka
342
+
qvu: lmn mjn
343
+
jdy: ifh qsj efu yas
344
+
nkv: jje
345
+
ojn: ahf wov hai nhx bhk
346
+
rfy: nkt
347
+
xmm: ebx aak
348
+
jzt: mck rak
349
+
mio: lcc
350
+
frk: izi oim
351
+
kqf: hlc
352
+
kft: fgc
353
+
pqr: zir jdx
354
+
kcx: zny
355
+
ytn: fwk gia zvu bbg
356
+
wau: une hju tvs
357
+
ljj: wjd pum zuj
358
+
jzg: huk gcd
359
+
ryr: nik
360
+
xcb: qnt
361
+
uco: fwk bbg you
362
+
pqf: xpt ifc
363
+
mgb: zzp ifc
364
+
diw: fac dxs elg osd
365
+
aak: vht nko kdd boe
366
+
vha: fhh vzq qvo boc
367
+
pgu: rfy
368
+
phe: mgq asn
369
+
zir: dap bic
370
+
vbv: pbv bik
371
+
fwb: vsy
372
+
ipq: swp olv dyq iur
373
+
xlv: pdz gvy wld xob
374
+
aai: ixj vjs
375
+
qnf: kcx fjw tvg wqf pcm fry
376
+
sym: aai ejn
377
+
ppg: wjd zuj pum
378
+
nak: fbf kwq zvs
379
+
vqp: out
380
+
hca: gix rnu
381
+
tla: cnb dkm tym jcv
382
+
xmh: tvs
383
+
brj: iwf
384
+
ohg: pcx fgc fph
385
+
mck: out
386
+
bne: zxf
387
+
uug: ceb ooc
388
+
wuh: gia fwk zvu you
389
+
how: qfb slz vka
390
+
glc: xcb yrq zco
391
+
isf: ifc zzp
392
+
elg: imk xlv wur
393
+
mgq: hju kow
394
+
upa: sdj jzt
395
+
agt: xmm
396
+
kot: phe wsw kmd tur
397
+
ftb: ywc jox
398
+
uzi: byz lay kwq fbf
399
+
brh: wax pvr kxq
400
+
aev: afp tla
401
+
ats: nso jdo
402
+
eae: mio olv iur swp
403
+
foi: kme
404
+
qdl: arh zal rcr yor
405
+
ngp: yxm haj
406
+
yir: enh
407
+
cfh: out
408
+
asf: yor arh zal
409
+
vwl: ona ums xos sar
410
+
lyf: yxm gfk
411
+
hlc: sve lce sfj oiu brj zgd wyd byh ajh sjd etc vzk qhv cmu bne
412
+
etm: out
413
+
zrk: ihs jvd
414
+
fse: nfe mzm
415
+
rus: yek
416
+
nei: zkr tth hlr lka
417
+
izt: out
418
+
ptn: jzt
419
+
ebd: bik one
420
+
rcr: ipq fft
421
+
txb: ozj
422
+
lkh: ceb ihw jix ayb
423
+
zal: fft
424
+
wpb: how
425
+
ooc: rlf
426
+
wjd: tth hlr lka
427
+
ona: boc tfa fhh vzq
428
+
qqj: tvs hju
429
+
zco: qnt
430
+
izi: out
431
+
hpj: ebd fnj vbv
432
+
rpb: tvs une
433
+
miw: swz bhg ams
434
+
qte: luf gko
435
+
wpu: vcd xgr jna xly
436
+
awd: pgr jdz
437
+
byh: akx axr vsy
438
+
fac: imk
439
+
rbx: aps tth zkr lka hlr
440
+
dwc: wpb oaw ryk
441
+
wbn: txb jox
442
+
hly: szq ppl
443
+
sdj: mck lke
444
+
une: qjd dhn rus wrf ojn ajl the ezl
445
+
ujn: out
446
+
ouy: gqb esf izt
447
+
swg: yek
448
+
amb: hly gir xfk
449
+
dap: haj yxm
450
+
nnz: ohg piz dqx kft grh
451
+
xfk: ppl kfc
452
+
nik: cwr hfg fgw auy
453
+
nmz: bye
454
+
bic: haj gfk
455
+
enh: jcv tym dkm cnb lyf
456
+
pcm: vlb cxx zny
457
+
qnw: wgp pum zuj
458
+
dhn: nhx
459
+
dqx: pcx fgc fph
460
+
skx: aps lka zkr tth
461
+
mpw: gia fwk bbg
462
+
wyd: zxf kmj pui xru
463
+
nso: mjn
464
+
mjd: nft alf upa mmq
465
+
cmu: awd mcy
466
+
jdo: mjn lmn jmd
467
+
cxk: ihs ped jvd
468
+
gua: nfe hlc
469
+
ewp: etm ehj
470
+
fzl: kmd tur wsw
471
+
gkv: jdo qvu wzm
472
+
cnt: lvi irm
473
+
bja: diw cxx zny
474
+
kbq: ixl
475
+
ums: qvo boc tfa fhh vzq
476
+
mjn: han pue
477
+
qdj: fwa
478
+
ulf: gir hly
479
+
gcd: tii
480
+
sjy: cwm cfh vqp vkw
481
+
kow: ojn nmm wrf vwl qjd mze xci swg xls wth glc tat ypt rab hwr dhn rus zyt the wji ajl
482
+
xjh: fjw fll pcm xfb pwt miw bja vwe rpp pmn kcx pny qte bqb
483
+
ogt: vax qun nik
484
+
znt: vsy akx
485
+
jox: wxx ozj ize com
486
+
bhg: afp tla
487
+
xnn: wzm jdo ars
488
+
wzm: lmn
489
+
pgr: you zvu bbg
490
+
kwb: ngp ogh
491
+
elm: gko ucg luf pqr
492
+
tei: yxm gfk
493
+
gvy: gfk
494
+
ryk: cir how
495
+
dkw: nik
496
+
epu: cwm vtp vqp vkw
497
+
vwt: qpu
498
+
hwr: qnw ysn
499
+
jjf: pny oka kcx bqb lvp vwe rpp fjw xfb fry pcm imt
500
+
cir: slz xva qfb
501
+
yxm: srf kot cnf aod dwc asf aso qfo wcn znh xdb pwf yuo qeh jdy vwv qdl xaz fmh
502
+
jvd: kqf fse
503
+
byz: zvu bbg you
504
+
rrt: cju xvf lff
505
+
vjs: tvs kow une
506
+
wax: taz
507
+
xdb: yas sym efu qsj
508
+
ozj: mzm
509
+
bao: ehj box ujn
510
+
pue: ftn
511
+
fgc: lfq bao otd
512
+
hkw: hni gdl
513
+
xob: yxm haj
514
+
smv: jvd ped
515
+
vnu: sjy
516
+
gir: kfc
517
+
hou: mpw fwa
518
+
lne: kow
519
+
sfj: osb nak uzi
520
+
qmn: ngp kgv
521
+
otd: ujn kak box
522
+
qfo: ifh yas
523
+
ujb: ftb pka wbn
524
+
ped: gua kqf fse
525
+
dcm: gzq nak osb
526
+
hai: ztu
527
+
vns: upa alf
528
+
kjs: ngp kgv
529
+
aso: xpf rxs
530
+
rpp: luf pqr gko ucg
531
+
fjw: qmn kwb
532
+
ezl: fka jkp fhl
533
+
huk: wpu tii bye
534
+
mzm: sve rho fob lkw yut riq brj fwb ajh byh zgd mgz etc sjd ndx dcm cmu vzk qhv bne cwe
535
+
zzp: jpr
536
+
ahf: skx rbx dqs
537
+
auy: mzm nfe hlc
538
+
xva: kow tvs
539
+
wci: hpj
540
+
bhk: skx ztu rbx
541
+
tur: qqj
542
+
zvu: wms vzo vfi brh mox fdo ove zuk irl vkn hbz
543
+
nkt: you zvu bbg gia
544
+
pdz: gfk haj
545
+
fnj: ayn bik pbv
546
+
tco: bbg fwk gia you
547
+
jix: cwa
548
+
cwe: mcy
549
+
jmd: fuu obk pue
550
+
cji: boe
551
+
aod: vya kmd
552
+
kdb: wau lne bez
553
+
xos: vzq
+10
day11/smallinput.txt
+10
day11/smallinput.txt
+63
day11/src/main.rs
+63
day11/src/main.rs
···
···
1
+
mod server;
2
+
use clap::Parser;
3
+
use server::Server;
4
+
5
+
#[derive(Parser)]
6
+
struct Args {
7
+
#[clap(short, long)]
8
+
file: String,
9
+
#[clap(short, long)]
10
+
debug: bool,
11
+
}
12
+
13
+
fn main() {
14
+
let args = Args::parse();
15
+
if args.debug {
16
+
println!("=== Debug mode enabled ===");
17
+
}
18
+
19
+
let mut nodes: Vec<Server> = Vec::new();
20
+
let file_contents = std::fs::read_to_string(&args.file).expect("Failed to read file");
21
+
22
+
nodes.push(Server::new("out", 0));
23
+
24
+
for line in file_contents.lines() {
25
+
let tokens = line.split_whitespace().collect::<Vec<_>>();
26
+
let source = tokens[0];
27
+
let server = Server::new(&source[..source.len() - 1], nodes.len());
28
+
nodes.push(server);
29
+
}
30
+
31
+
println!("Nodes: {:?}", nodes);
32
+
33
+
for line in file_contents.lines() {
34
+
let tokens = line.split_whitespace().collect::<Vec<_>>();
35
+
let source = &tokens[0][..tokens[0].len() - 1];
36
+
let destinations = &tokens[1..];
37
+
println!("Source: {}, Destinations: {:?}", source, destinations);
38
+
let server_index = nodes.iter().position(|s| s.label == source).unwrap();
39
+
for next_label in destinations {
40
+
let index = nodes.iter().position(|s| s.label == **next_label).unwrap();
41
+
nodes[server_index].add_next(index);
42
+
}
43
+
}
44
+
45
+
let you = nodes.iter().position(|s| s.label == "you").unwrap();
46
+
47
+
let mut paths = 0;
48
+
let mut path: Vec<usize> = Vec::new();
49
+
50
+
path.push(you);
51
+
52
+
while let Some(next) = path.pop() {
53
+
if next == 0 {
54
+
paths += 1;
55
+
continue;
56
+
}
57
+
for &neighbor in &nodes[next].next {
58
+
path.push(neighbor);
59
+
}
60
+
}
61
+
62
+
println!("Visited {} paths", paths);
63
+
}
+22
day11/src/server.rs
+22
day11/src/server.rs
···
···
1
+
use std::fmt::Debug;
2
+
3
+
#[derive(Debug, Eq, PartialEq, Hash)]
4
+
pub struct Server {
5
+
pub label: String,
6
+
pub index: usize,
7
+
pub next: Vec<usize>, // Store indices instead of references
8
+
}
9
+
10
+
impl Server {
11
+
pub fn new(label: &str, index: usize) -> Self {
12
+
Server {
13
+
label: label.to_string(),
14
+
index,
15
+
next: Vec::new(),
16
+
}
17
+
}
18
+
19
+
pub fn add_next(&mut self, next_index: usize) {
20
+
self.next.push(next_index);
21
+
}
22
+
}
+186
day2/Cargo.lock
+186
day2/Cargo.lock
···
···
1
+
# This file is automatically @generated by Cargo.
2
+
# It is not intended for manual editing.
3
+
version = 4
4
+
5
+
[[package]]
6
+
name = "anstream"
7
+
version = "0.6.21"
8
+
source = "registry+https://github.com/rust-lang/crates.io-index"
9
+
checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
10
+
dependencies = [
11
+
"anstyle",
12
+
"anstyle-parse",
13
+
"anstyle-query",
14
+
"anstyle-wincon",
15
+
"colorchoice",
16
+
"is_terminal_polyfill",
17
+
"utf8parse",
18
+
]
19
+
20
+
[[package]]
21
+
name = "anstyle"
22
+
version = "1.0.13"
23
+
source = "registry+https://github.com/rust-lang/crates.io-index"
24
+
checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
25
+
26
+
[[package]]
27
+
name = "anstyle-parse"
28
+
version = "0.2.7"
29
+
source = "registry+https://github.com/rust-lang/crates.io-index"
30
+
checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
31
+
dependencies = [
32
+
"utf8parse",
33
+
]
34
+
35
+
[[package]]
36
+
name = "anstyle-query"
37
+
version = "1.1.5"
38
+
source = "registry+https://github.com/rust-lang/crates.io-index"
39
+
checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
40
+
dependencies = [
41
+
"windows-sys",
42
+
]
43
+
44
+
[[package]]
45
+
name = "anstyle-wincon"
46
+
version = "3.0.11"
47
+
source = "registry+https://github.com/rust-lang/crates.io-index"
48
+
checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
49
+
dependencies = [
50
+
"anstyle",
51
+
"once_cell_polyfill",
52
+
"windows-sys",
53
+
]
54
+
55
+
[[package]]
56
+
name = "clap"
57
+
version = "4.5.53"
58
+
source = "registry+https://github.com/rust-lang/crates.io-index"
59
+
checksum = "c9e340e012a1bf4935f5282ed1436d1489548e8f72308207ea5df0e23d2d03f8"
60
+
dependencies = [
61
+
"clap_builder",
62
+
"clap_derive",
63
+
]
64
+
65
+
[[package]]
66
+
name = "clap_builder"
67
+
version = "4.5.53"
68
+
source = "registry+https://github.com/rust-lang/crates.io-index"
69
+
checksum = "d76b5d13eaa18c901fd2f7fca939fefe3a0727a953561fefdf3b2922b8569d00"
70
+
dependencies = [
71
+
"anstream",
72
+
"anstyle",
73
+
"clap_lex",
74
+
"strsim",
75
+
]
76
+
77
+
[[package]]
78
+
name = "clap_derive"
79
+
version = "4.5.49"
80
+
source = "registry+https://github.com/rust-lang/crates.io-index"
81
+
checksum = "2a0b5487afeab2deb2ff4e03a807ad1a03ac532ff5a2cee5d86884440c7f7671"
82
+
dependencies = [
83
+
"heck",
84
+
"proc-macro2",
85
+
"quote",
86
+
"syn",
87
+
]
88
+
89
+
[[package]]
90
+
name = "clap_lex"
91
+
version = "0.7.6"
92
+
source = "registry+https://github.com/rust-lang/crates.io-index"
93
+
checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
94
+
95
+
[[package]]
96
+
name = "colorchoice"
97
+
version = "1.0.4"
98
+
source = "registry+https://github.com/rust-lang/crates.io-index"
99
+
checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
100
+
101
+
[[package]]
102
+
name = "day2"
103
+
version = "0.1.0"
104
+
dependencies = [
105
+
"clap",
106
+
]
107
+
108
+
[[package]]
109
+
name = "heck"
110
+
version = "0.5.0"
111
+
source = "registry+https://github.com/rust-lang/crates.io-index"
112
+
checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
113
+
114
+
[[package]]
115
+
name = "is_terminal_polyfill"
116
+
version = "1.70.2"
117
+
source = "registry+https://github.com/rust-lang/crates.io-index"
118
+
checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
119
+
120
+
[[package]]
121
+
name = "once_cell_polyfill"
122
+
version = "1.70.2"
123
+
source = "registry+https://github.com/rust-lang/crates.io-index"
124
+
checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
125
+
126
+
[[package]]
127
+
name = "proc-macro2"
128
+
version = "1.0.103"
129
+
source = "registry+https://github.com/rust-lang/crates.io-index"
130
+
checksum = "5ee95bc4ef87b8d5ba32e8b7714ccc834865276eab0aed5c9958d00ec45f49e8"
131
+
dependencies = [
132
+
"unicode-ident",
133
+
]
134
+
135
+
[[package]]
136
+
name = "quote"
137
+
version = "1.0.42"
138
+
source = "registry+https://github.com/rust-lang/crates.io-index"
139
+
checksum = "a338cc41d27e6cc6dce6cefc13a0729dfbb81c262b1f519331575dd80ef3067f"
140
+
dependencies = [
141
+
"proc-macro2",
142
+
]
143
+
144
+
[[package]]
145
+
name = "strsim"
146
+
version = "0.11.1"
147
+
source = "registry+https://github.com/rust-lang/crates.io-index"
148
+
checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
149
+
150
+
[[package]]
151
+
name = "syn"
152
+
version = "2.0.111"
153
+
source = "registry+https://github.com/rust-lang/crates.io-index"
154
+
checksum = "390cc9a294ab71bdb1aa2e99d13be9c753cd2d7bd6560c77118597410c4d2e87"
155
+
dependencies = [
156
+
"proc-macro2",
157
+
"quote",
158
+
"unicode-ident",
159
+
]
160
+
161
+
[[package]]
162
+
name = "unicode-ident"
163
+
version = "1.0.22"
164
+
source = "registry+https://github.com/rust-lang/crates.io-index"
165
+
checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
166
+
167
+
[[package]]
168
+
name = "utf8parse"
169
+
version = "0.2.2"
170
+
source = "registry+https://github.com/rust-lang/crates.io-index"
171
+
checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
172
+
173
+
[[package]]
174
+
name = "windows-link"
175
+
version = "0.2.1"
176
+
source = "registry+https://github.com/rust-lang/crates.io-index"
177
+
checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
178
+
179
+
[[package]]
180
+
name = "windows-sys"
181
+
version = "0.61.2"
182
+
source = "registry+https://github.com/rust-lang/crates.io-index"
183
+
checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
184
+
dependencies = [
185
+
"windows-link",
186
+
]
+7
day2/Cargo.toml
+7
day2/Cargo.toml
+1
day2/input.txt
+1
day2/input.txt
···
···
1
+
8123221734-8123333968,2665-4538,189952-274622,4975-9031,24163352-24202932,1233-1772,9898889349-9899037441,2-15,2147801-2281579,296141-327417,8989846734-8989940664,31172-42921,593312-632035,862987-983007,613600462-613621897,81807088-81833878,13258610-13489867,643517-782886,986483-1022745,113493-167913,10677-16867,372-518,3489007333-3489264175,1858-2534,18547-26982,16-29,247-366,55547-103861,57-74,30-56,1670594-1765773,76-129,134085905-134182567,441436-566415,7539123416-7539252430,668-1146,581563513-581619699
+3
day2/shortinput.txt
+3
day2/shortinput.txt
+114
day2/src/main.rs
+114
day2/src/main.rs
···
···
1
+
use clap::Parser;
2
+
use std::fs;
3
+
4
+
#[derive(Parser, Debug)]
5
+
#[command(author, version, about, long_about = None)]
6
+
struct Args {
7
+
#[arg(short, long)]
8
+
file: String,
9
+
}
10
+
11
+
fn main() {
12
+
let args = Args::parse();
13
+
14
+
let sum = sum_ids(&args.file);
15
+
println!("Sum of all invalid ids is {}", sum);
16
+
}
17
+
18
+
fn is_invalid_id(id: u64) -> bool {
19
+
let log_10 = (id as f64).log10().ceil() as u32;
20
+
let magic_number = 10u64.pow(log_10 / 2);
21
+
/* println!(
22
+
"Checking ID: {}, divisor is {}, magic_number is {}",
23
+
id, log_10, magic_number
24
+
); */
25
+
id / magic_number == id % magic_number
26
+
}
27
+
28
+
// Go through each log10 from 1..log10(n)
29
+
// check last n digits of divisor == modulo
30
+
// eg 121212
31
+
// n = 121212, i = 1, mod = 2, ldigits = 1
32
+
// n = 121212, i = 2, mod = 12, ldigits = 12
33
+
// -> n = 1212, i = 2, mod = 12, ldigits = 12 !!!
34
+
//
35
+
// 101 -> 1) 10,1 ; 0 != 1
36
+
// 101 -> 2) 1,1 1 < 10 !!
37
+
38
+
fn is_invalid_id_hard(id: u64) -> bool {
39
+
// println!("=== Checking ID: {} ===", id);
40
+
let mut c_id = id;
41
+
let mut cur_part;
42
+
// i is the log value, ie the window size we are checking
43
+
for i in 1..(id as f64).log10() as u32 + 1 {
44
+
// trim off end of number
45
+
// we saved the current part above
46
+
let pow_10 = (10u32.pow(i) as u64);
47
+
cur_part = c_id % pow_10;
48
+
49
+
// println!("n = {}, i = {}, pow_10 = {}", id, i, pow_10);
50
+
// repeat until the value drops below the target log
51
+
while c_id > 10 {
52
+
// remove last n digits from c_id
53
+
c_id = c_id / pow_10;
54
+
// last i digits of c_id
55
+
let last_digits = c_id % pow_10;
56
+
if last_digits == cur_part {
57
+
// println!(
58
+
// "For exponent {}, digits {} and {} matched in {}, id slice {}",
59
+
// i, last_digits, cur_part, id, c_id
60
+
// );
61
+
if last_digits >= (10u32.pow(i - 1) as u64) && c_id == last_digits {
62
+
return true;
63
+
}
64
+
// set cur_part to last i+1 digits
65
+
// cur_part = c_id / pow_10 % (10u32.pow(i + 1) as u64);
66
+
} else {
67
+
// println!(
68
+
// "For exponent {}, digits {} and {} DO NOT MATCH in {}, id slice {}",
69
+
// i, last_digits, cur_part, id, c_id
70
+
// );
71
+
break;
72
+
}
73
+
}
74
+
c_id = id;
75
+
}
76
+
return false;
77
+
}
78
+
79
+
// Finding repeated bits
80
+
//
81
+
// for i in 1..log10(n)
82
+
//
83
+
84
+
fn check_range(start: u64, end: u64) -> u64 {
85
+
println!("Checking range from {} to {}", start, end);
86
+
let mut invalid_sum: u64 = 0;
87
+
for n in start..end + 1 {
88
+
if is_invalid_id_hard(n) {
89
+
println!("Invalid ID: {}", n);
90
+
invalid_sum += n;
91
+
}
92
+
}
93
+
invalid_sum
94
+
}
95
+
96
+
fn sum_ids(filename: &str) -> u64 {
97
+
let file_contents = fs::read_to_string(filename).expect("Failed to read file");
98
+
let mut invalid_sum: u64 = 0;
99
+
for range in file_contents.split(',') {
100
+
let split_range: Vec<&str> = range.trim().split('-').collect();
101
+
let start = split_range
102
+
.get(0)
103
+
.unwrap_or(&&"")
104
+
.parse::<u64>()
105
+
.expect("Could not unwrap start value of range");
106
+
let end = split_range
107
+
.get(1)
108
+
.unwrap_or(&&"")
109
+
.parse::<u64>()
110
+
.expect("Could not unwrap end value of range");
111
+
invalid_sum += check_range(start, end);
112
+
}
113
+
return invalid_sum;
114
+
}
+186
day3/Cargo.lock
+186
day3/Cargo.lock
···
···
1
+
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+
# It is not intended for manual editing.
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+7
day3/Cargo.toml
+7
day3/Cargo.toml
+200
day3/input.txt
+200
day3/input.txt
···
···
1
+
5336553644444345344544134246423443634474453456455433543434354444344554344336446734443434424442135474
2
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2231552222211222122232222222153222143972321313222122221132199121111212232232222223322324232211141222
3
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4
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5
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2442432212422332232212684452222313252425265641254324242452246232226535522434643524124524537424423362
6
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7
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6222223242223652228324218422222362221764545245524242232623222297125251246222225724122121211122224222
8
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4232224233342412225323232213216232342313322232223122122235533321125233534232433231314523232332322221
9
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2122322222214334122221225332224135442322222222212222422222323226222122212232212224221122213432222122
10
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2424223122212362222224552241443214224422422432222223843433512122232228212222124434222582122223222222
11
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12
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13
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2222212212242122222232222221221722123232232212122212232222221222322221222233321212222421322222222212
14
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15
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17
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18
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27
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28
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30
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31
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32
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33
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34
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35
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38
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39
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43
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46
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47
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48
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49
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50
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52
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53
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54
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55
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56
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57
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59
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60
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61
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175
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176
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178
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181
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182
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183
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184
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185
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186
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188
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189
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190
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5422323334251453444454343442444434444433444444424434464355445636343364223233547334243565463223543353
191
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192
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193
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194
+
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195
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196
+
2323332222215222232223227232222342323223221423113232232232322732221322242222312213223323112322223222
197
+
2245715272513133322434335464322323333232754364273424241423222463424522223533112411739542122823433443
198
+
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199
+
1136232521161566663356511554543612421615256265466164316421666416414542446556624131632223534212255789
200
+
8253243324523333532224546353152554242525224253255824125264455332262523225422354333245722624625223832
+4
day3/shortinput.txt
+4
day3/shortinput.txt
+130
day3/src/main.rs
+130
day3/src/main.rs
···
···
1
+
use clap::Parser;
2
+
use std::{fs, ops::Sub};
3
+
4
+
#[derive(Parser, Debug)]
5
+
#[command(author, version, about, long_about = None)]
6
+
struct Args {
7
+
#[arg(short, long)]
8
+
file: String,
9
+
}
10
+
11
+
// Advent of Code Day 3
12
+
// Joltage battery problem
13
+
14
+
fn main() {
15
+
let args = Args::parse();
16
+
17
+
let total_joltage = sum_joltage(&args.file);
18
+
println!("Maximum battery joltage is {}", total_joltage);
19
+
}
20
+
21
+
fn sum_joltage(filename: &str) -> u64 {
22
+
let contents = fs::read_to_string(filename).expect("Unable to read file");
23
+
let banks = contents.lines();
24
+
25
+
let mut total_joltage = 0;
26
+
for bank in banks {
27
+
total_joltage += get_12_joltage(bank);
28
+
}
29
+
30
+
return total_joltage;
31
+
}
32
+
33
+
// Naive approach with 2 for loops to parse string
34
+
// Go to biggest number before the end and find max
35
+
// Redo starting from index of previous number + 1
36
+
fn get_max_joltage(bank: &str) -> u32 {
37
+
// get biggest starting digit before last one
38
+
let mut digit_a = 0;
39
+
let mut digit_b_start = 0;
40
+
for (index, c) in bank[..bank.len() - 1].chars().enumerate() {
41
+
match c.to_digit(10) {
42
+
Some(digit) => {
43
+
if digit > digit_a {
44
+
digit_a = digit;
45
+
digit_b_start = index + 1;
46
+
}
47
+
}
48
+
_ => {
49
+
println!("invalid digit")
50
+
}
51
+
}
52
+
}
53
+
println!("Digit a is {} at index {}", digit_a, digit_b_start);
54
+
55
+
let mut digit_b = 0;
56
+
for c in bank[digit_b_start..].chars() {
57
+
match c.to_digit(10) {
58
+
Some(digit) => {
59
+
if digit > digit_b {
60
+
digit_b = digit;
61
+
}
62
+
}
63
+
_ => {
64
+
println!("invalid digit")
65
+
}
66
+
}
67
+
}
68
+
println!("Digit b is {}", digit_b);
69
+
return digit_a * 10 + digit_b;
70
+
}
71
+
72
+
// Basically a sliding window approach, where you find the max value within each window
73
+
// ensuring that you still have enough characters later on to fill out the required number
74
+
// of batteries, represented here as K (the problem asks for 12 but generalized solution!! yay!!)
75
+
fn get_k_joltages(bank: &str, k: usize) -> u64 {
76
+
// initialize vector of len k for storing voltages (i cannot be bothered to use "joltage" everywhere)
77
+
let mut voltages = vec![0; k];
78
+
79
+
// used to store global position from the slice positions
80
+
let mut index_acc = 0;
81
+
// used to store the relative positions in each slice
82
+
let mut start_index = 0;
83
+
// stores maximum value within each slice
84
+
let mut max_voltage = 0;
85
+
86
+
for n in (1..=k).rev() {
87
+
// Get the chars from start_index to len(bank)-n, shouldn't underflow bc of assert
88
+
assert!(n < bank.len());
89
+
let end_index = bank.len().sub(n - 1);
90
+
let arr_slice = bank[start_index..end_index].chars();
91
+
// println!("arr_slice: {:?} from bank: {}", arr_slice.as_str(), bank);
92
+
for (index, c) in arr_slice.enumerate() {
93
+
// println!(
94
+
// "n: {}, index: {}, c: {}, start_index: {}, end_index: {}, max_voltage: {}",
95
+
// n, index, c, start_index, end_index, max_voltage
96
+
// );
97
+
98
+
let cvalue = c.to_digit(10).unwrap();
99
+
if cvalue > max_voltage {
100
+
max_voltage = cvalue;
101
+
// this shit drove me so crazy.
102
+
start_index = index_acc + index + 1;
103
+
}
104
+
}
105
+
// Update global position to the location of last found maximum + 1
106
+
index_acc = start_index;
107
+
// after getting max value, set the nth voltage value and reset max_voltage value
108
+
voltages[k - n] = max_voltage;
109
+
max_voltage = 0;
110
+
}
111
+
// println!("Voltages: {:?}", voltages);
112
+
return voltages
113
+
.into_iter()
114
+
.enumerate()
115
+
.fold(0u64, |acc, (index, value)| {
116
+
// println!("value: {}, index: {}, pow: {}", value, index, k.sub(index));
117
+
acc + (value as u64).strict_mul(10u64.pow(k.sub(index + 1) as u32))
118
+
});
119
+
}
120
+
121
+
// Part 2 requires solving for 12 batteries
122
+
// Likely should use recursion --PSYCH JK DIDN'T DO THAT LMAO
123
+
// Basically want to find largest digit , next largest over and over
124
+
// Maybe string manipulation is bad idea, using raw numbers lets powers of ten
125
+
// function as indexes? So 9_000 would be bigger than 900
126
+
// I think the problem can be recontextualized as "drop the lowest digits from left to right"
127
+
// ^^ this was also wrong. i was dumb last night fr.
128
+
fn get_12_joltage(bank: &str) -> u64 {
129
+
get_k_joltages(bank, 12)
130
+
}
+7
day4/Cargo.lock
+7
day4/Cargo.lock
+4
day4/Cargo.toml
+4
day4/Cargo.toml
+136
day4/input.txt
+136
day4/input.txt
···
···
1
+
.@..@@@@@.@.@@@..@.@@..@@@.@.@.....@@.@@.@@@@@@..@@@.@.@.@..@..@@@@@@@..@@@.@.@@.@@@@@@.@@@@@@@.@@@.@@@@@.@...@@@@@.@@.@...@.@@.@@.@@@@@
2
+
@@@.@@.@@@...@.@.@..@.@@...@@@@@@@@@.@@@@@.@@@@.@@@.@@@.@..@@@@..@...@@@@..@.@@..@.@@.@@@@@@..@@@.@@.@@@@@.@....@@@@@@...@.@@@.@@....@@@
3
+
..@@@@.@.@@@@.@@@@@...@@@.@@...@@@@...@@.@@@@.@@@@@@@@@@@.@.@@@@@@@...@@@@@.@@.@@@@.@....@@@@@@.@@@.@@@@@@@.@...@@@...@@@.@..@@@@.@@@@.@
4
+
@@@@@@@.@.@@..@@.@@@@@@.@@@..@@@@.@@..@@@@@@@@@.@@@@@@....@..@.@@.@@.@@@@.@@@.@.@.@@@@@.@@@@..@..@@.@..@@@..@@.@@.@..@.@.@@@.@@@.@....@@
5
+
@.@@..@.@@.@@@@..@@@@@@@@.@@@@@@@@@@@@@....@@.@@@@@@.@@@@..@.@..@@@.@@@@..@.@@@.@@.@@@@@@.@@.@@@@@@.@@.@@@@.@.@@@@@.@@@.@@@.@@@@..@@@@@@
6
+
@@@@@.@...@.@..@@.@@..@..@@@.@.@.@.@@.@@@@.@@..@...@@@@@@@@@@@..@@@@..@@.@@..@@@@..@@@@@@@@.@@.@@@@@@@@@.@@...@...@@@..@@@@..@.@@@.@@@@.
7
+
@@@@@@.@@@@@@@......@.@@@@@@@@@@@@.@@@@...@@@.@.@@@@@...@@.@@@@@.@@@.@@@.@@@@...@.@@@@@@@@.@.@@@..@@.@@.@@@..@@@..@@@@.@@@.@@.@@@..@..@@
8
+
@@.@@.@@.@.@.@@@@.@..@@@@@@..@@@@.@@@.@@..@@@@.@@...@@@.@..@@@.@@@@....@..@.@...@@@@@@@.@@..@@.@@@.@@@..@.@.@@@.@.@@@@@@@..@@@.@@@@@.@@.
9
+
.@.@@@@.@@@@@@@@@@@@.@@@..@.@.@@..@.....@@..@@@@.@.@@.@..@.@@.@@..@.@@@@@@.@.@.@@.@@.@..@@.@.@..@..@@@@@.@.@@..@@@.@@@@@@.@@..@@@@@@@@.@
10
+
.@@.@@@@@.@.@@@@@@@@.@@@.@.@@..@...@@@...@.@..@.@.@.@@@..@.@@...@@@@@..@@.@@@..@@@@@.@@@@.@@@.@@@@@..@@@.@@.@.@...@.@@....@.@.@@@@@@@@@@
11
+
...@@@@@..@@.@@.@...@@@.@...@..@@@@@@@..@.@..@@@..@.@@@@@@..@@...@@@@..@@@...@@@@.@@.@.@@@.@@@@@@@@@@..@.@@.@.@@@.@@@@@@.@.@..@@@@@.@@@@
12
+
@@@@.@@@@@@.@@@@..@@@@@@.@...@.@.@@.@@@@@.@.@.@@@@.@@..@@.@@..@.@.@@@@.@@@@@@..@.@.@@@@@@@@@@@@..@..@@@....@.@@@@@.@@@@..@@.@...@.@..@@@
13
+
.@@@@.@@@@@@@.....@..@@.@@@.@@@@..@@@@.@@..@@@@@..@@.@..@@@@@.@@@@.@@.@.@@..@.@@.@..@.@@@@@@@.@@@.@..@.@@@.@@@@@@.@@@@@@@@@.@@@@@@@@@@..
14
+
@..@@@..@..@@.@@@@.@..@...@@@.@@..@.@@.@@@.@@.@@@@@@.@@@@@.@@@@@@@@@@@.@@@@..@.@.@..@@.@@@@@@@@.@@@.@.@..@@@@@@.@@.@@.@@.@.@@@@@@@@.@@@@
15
+
@@.@...@..@@.@.@..@.@.@.@.@.@.@@.@@@.@@@@@@.@@.@.@....@@@@...@.@.@@@@@.@@.....@.@@@@....@.@.@.@.@@.@@.@@@@@@..@..@@@@.@.@...@@.......@@@
16
+
@....@@@@@@.@@.@@@..@.@@@@@.@.@.@@.@.@.@@@.@@@@.@@@@.@.@.@@@@@@@@.@@@@.@@.@.@@@@@@@@.@.@@.@@.@@..@@...@.@@@@.@@@@@@@@@..@@..@@.@.@@@@.@@
17
+
.@@@..@@@@@...@@.@@.@..@@@...@@.@@@@@@@..@@...@@.@@..@@..@.@.@@@.@@@..@@@@..@@@.@@@@@.@@@.@@...@@.@..@@@..@.@@@..@@@@@..@@.@..@...@@..@@
18
+
.@@@@.@@@.@@@@@...@@...@..@.@@@@@..@...@@@.@.@@.@@.@@.@.@.@...@.@@.@@@..@@@@@@@@.@@@@@@@.@@.@.@.@@.@@..@.@.@@@@@@.@@@.@@.@.@@@....@@@@.@
19
+
@@@..@@@@@@..@..@.@.@@@.@.@@.@@.@@@@@.@@..@@@@@@@@.@@@@@@@@@@@@.@.@@@@@@@.@@@@@@@.@@.@@@@@@@@@@@.@..@@.@@.@@@.@@@@@.@@.@@@.@.@@@..@@@@@.
20
+
..@@.@@@@@..@@@.@@@.@@@@@@@..@@@@@@@@.@@@...@@@@@.@.@@.@@@.@@..@@@@@@..@@@..@@.@@@@......@..@@@@@@.@.@.@@..@.@@@..@.@.@@@...@@.@..@.@@@.
21
+
@@.@@@@.@@..@.@@.@...@@@@..@.@.@@@@@..@.@@..@@..@@@@.@.@.@@@@.@.@....@.@@@.@.@@@@@..@@@@@...@@@@@..@@..@@.@@.@@@@@.@@@.@@.@@.@@..@@@...@
22
+
.@@@@@@@.@.@@@.@@@.@@@@@@.@@@.@@@@@@@@@@@...@.@@.@@.@@..@@@@@@.@@@@@@.@@@...@...@@@.@@@.@..@@@@@@.@.@@@@@@@@@@@@@@@@@.@..@..@@@@@.@@@.@.
23
+
.@.@@@@@.@.@@..@@.@.@@@@.@@@@...@.@..@..@@.@.@..@@@@@@.@...@@@.@@@@@@...@@@@@@@@.@@@@@.@.@.@.@@..@@.@@@.@..@@@.@@@@.@@@@@@.@..@@@@.@@@.@
24
+
..@@..@@.@@.@.@@@@@@@@@@@.@@@@@@.@.@@.@@@@@@.@@..@.@@@.@@@@..@@.@...@.@@@@@@@@.@@@@@@@...@.@.@@@@@@.@@@@@@@@@@@@@@..@@@.@@@@.@@@@@.@@@.@
25
+
..@.@@@@@@@@..@@@..@@@.@@@@@@@@..@@.@@@@@@@@@@@@@@.@@@.@@@@@@.@.@@@.@@@@@@.@@.@.@@.@@.@@..@@@.@@@..@.@@@@@@@.@.@.@@@@.@..@@@..@...@....@
26
+
.@@.@@@@.@@@@@.@..@.@.@.@@..@.@@@@@@@.@.@@..@@....@@@@.@@@..@.@.@@@@.@....@.@.@@@@.@.@.@@@@@@@.@@.@@@..@@@..@@@@...@@@..@@@.@.@..@@@@@@@
27
+
@.@.@...@.@.@@@@@@..@.@@.@@.@.@@@@...@@.@.@@@@.....@@@@@@@@..@....@.@@@@@@..@@@@@...@..@@@@@@@@@@@.@@@@@.@@@..@@.@..@@...@.@@@..@@@..@@@
28
+
@@@@@.@.@@..@..@@@...@@.@@.@@.@@@.@@@@@@@@@@@@@@.@@@@.@@...@@.@@.@@@.@..@@@..@@@@@@@...@@@@@....@..@.@.@.@@@.@@@@@@@@.@.@...@.@.@.@@@.@.
29
+
@@@.@@.@@@.@@.@.@@..@@@@@.@@@.@@@@@@..@@..@.@..@@@@@@@.@@@@@..@@@@@...@@@.@@@@@@@.@@.@@@@..@@@@....@@..@@@@.@@...@@@@.@@.@..@@..@@@@@@.@
30
+
....@@@@@@@@@@@@@@.@.@..@@@.@.@@.@@@.@@@@.@.@.@@@@..@@@...@....@..@@@@.@@.@@@@@.@@.@..@@.@@@.@@@@.@...@@@.....@@.@@.@@@@@..@@@@@@..@@@..
31
+
@@@@@@@.@.@@@..@@.@@@@@@@.@..@@@...@.@.@@..@@@@@@....@@@@@@@@..@@@...@.@..@@@.@.@.@...@@@@.@@.@@@@@.@@@@@.@@@.@.@.@@@@.@@@@@@@@@.@@@.@@@
32
+
@@..@@@@@@@@@.@@@..@..@@@@@.@@@@..@@.@@@.@...@.@@.@.@.@.@.@@@@@..@@@.@@@.@@@.@@.@@@@.@@.@.@.@.@.@@..@@.@@@@.@@...@@.@@@.@@.@@..@.@@@@@@@
33
+
.@@@...@@@@@@.@.@@@.@@.@@@@..@.@@.@@@@@@@.@@..@@@@@@@@.@.@..@..@@@@@@@.@@@@.@...@.@.@@..@@@@.@@.@...@@@.@@.@@.@..@@.@@.@.@.@@.@.@@@@@..@
34
+
@@@@@....@@@@..@@.@.@..@@..@@@....@@...@@.@@@.@@@@@..@..@..@@@@@@@@..@@..@@@@@...@@@@.@@@.@@..@..@@@..@..@@@@@.@.@.@.@@@@@@@@@.@..@@@@..
35
+
@@.@..@@@@@......@@.@.@.@..@@.@@.@.@@@@@@@@.@@@@@@@@..@@@@......@..@@.@.@@@.@.@..@@@.@.@@@@@@@.@.@..@....@..@@..@@@@@...@.@.@@@@.@.@..@@
36
+
.........@@@@@@@@@@@..@....@.@@@@@@@@@@.@..@.@@@@@@..@@@.@@@.@@@@@@@@.@@..@.@..@..@.@.@@.@@@...@@@@@@@.@..@@@@@@@..@.@@.@.@..@.@@@@@.@.@
37
+
@@@.@.@.@.@@@.@@.@@.@@@.@@..@.@@.@.@@.@@@...@@@@@@.@.@@@@.@@..@@.@.@@.@@@@@@@@..@.@@@@@@@@@@@@@@@@.@...@.@...@@@@@@@@.@@...@@@@.@.@@.@@@
38
+
.@.@@@.@@@@@....@@..@@..@@@@@@@@@..@@.@@@.@@...@@@@@@@....@..@.....@.@@...@@@@..@@.@@@@...@@@@@@..@@@..@.@.@@@..@@.....@@.......@.@@@@@@
39
+
..@@@...@@..@..@.@.@@.@...@@...@@@@@@@.@@...@@@@@@@...@@..@@...@@@...@@@@@@.@@..@@@@@@@.@@@.@@@@@@@.@@@@@@@@..@.@@@@@@.@..@@.@.@@@@..@@.
40
+
.@...@@.@@@@@@@@@....@.@@@@..@@@....@.@@@@@@@@@@@.@@@@@..@.@.@@..@@.@.@@.@@@..@@@@.@@@.@@...@.@@.@@.@@.@@@.@@.@.@@@@@..@..@..@@.@@@..@..
41
+
@@@@@.@@@@..@@.@@..@.@.@@.......@@@....@..@@@.@.@@@@@@@@@@@@@..@@....@.@.@@@@@@@.@@@@@@@.....@@@@..@.@@@.@@@@@@@@..@.@@@@@@@@@..@@@.@.@@
42
+
@@@@@@@@@@@@...@@..@@.@@.@@@@@.@@@@.@@@@@@@@@@..@@@.@.@@@@@.@.@@@@@@@.@@.@..@@.@...@..@.@@@.@@..@@...@@@@@@@@@.@.@@@.@.@.@.@.@@..@@.@@@@
43
+
@.@..@@@@@.@@@@@@@@.@@@@.@@.@@@@..@...@@@...@.@@@@@@@@..@@..@.@@.@@@@@...@.@@@.@@@@@.@@@@@@@@..@@@...@@@@@...@@@.@...@@@@@@@@@@.@@..@@@@
44
+
.....@.@..@......@@.@...@@@.@...@...@@@@..@@@.@.@@@.@.@...@@@.@@@@...@.@@@.@@..@@.@.@@@@..@@@@@@.@@.@@@.@@@..@..@.@@@@...@..@.@@@@..@@..
45
+
@@@.@.@@..@@.@@@@@@@..@@@.@@@..@@@@..@..@@..@.@@@@.@.@..@@@@@@@.@@@..@@@@@@..@@.@@@@.....@@@..@...@@..@@@@@@@@@...@@@@@@@.@@@@.@@@@.@@.@
46
+
..@@.@@@@.@@.@@@..@@@..@.@.@@@@@@@..@.@@@.@@.@@@@.@@.@@@@@@.@@@@@@@@.@.@@@@@@@@@@@@@@@@.@@@@@@@@.@....@.@.@@@..@@@@.@.@@..@@@@@@.@.@@@@.
47
+
.@@@@@@@@@@.@..@.@.@@.@@@.@@.@@.@@.@@.@@@@@@@@...@@@@@@.@.@..@@@@...@...@@@@.@@@@@@....@@@.@@.@.@@.@@@..@@@@@@.@.@@..@.@.@@@@@@@@@@@..@.
48
+
.@@..@@.@.@@.@@.@@.@@@@@...@@.@@.@@@@@@.@.@@.@@@@@@@@@@.@@@.@.@@@@@@.@.@@..@@@@.@.@@@@..@@@@.@@.@@@@.@@...@...@@....@@.@@.@@@@@@@@...@@.
49
+
...@@@@@@@.@@..@@@@@..@@..@.@@..@..@@.@..@@..@.@@.@@.@.@.@.@@.@@@@@.@....@@@.@@@@.@....@@..@.@@.@.@.@@..@@@..@@@.@.@@@..@@@....@@@@@.@@@
50
+
@.@@..@@@@@.@.@@@@@.@.@.@@...@@@@@@@@..@@@@@@.@@..@.@@@.@@.@@@.@.@@@.@@@@@@@.@.@.@..@@.@.@.@@.@..@@@.@@.@.@@@@@@@.@..@@@..@.@@.@@@@.@@@@
51
+
@@@.@...@@@@@@@..@@@..@@@.@@@.@@..@.@.@.@.@@.@.@..@@.@.@.@.@@@@.@@@@@..@@..@..@.@@@@@..@.@@.@...@@..@.@@@@..@.@@@@.@@@.@@@.@@@@.@@..@@.@
52
+
.@.@@@@@@@@@@@@..@.@@@@.......@@.@@.@@@@@@.@.....@@@@@@@@@@@.@..@@..@@.@.@@@@..@@@@@.@@@@..@@.@@@...@@@..@..@@@@@@@.@...@@@@..@...@@.@@@
53
+
@@@@.@...@.@..@@@@...@@@@@...@.@@@..@.@@@...@@@@@@.@@.@.@.@.@@.@@@@@@..@@@.@@@@.@@..@..@@@@.@@...@...@..@@@.@@..@.@@.@@@@@.@.@@@@@@@@@.@
54
+
@@@@...@@.@@@....@@.@.@...@@.@@.@@@@.@.@@@@@@@@.@@@@@@.....@..@@@...@.@@@.@@...@.@@.@.@@@....@.@.@@@..@@@@.@.@@@@.@@.@.@@@.@@@@@@@.@@...
55
+
@@@@@.@@@@.@@.@@..@.@@.@@.@@@.@@@@@@..@.@.@@.@.@@@.@@@@@@@.@@@@@@@@@@@@@@.@@.....@.@..@@@@..@..@@.@@@@@@@..@.@......@.@@@@.@@.@@@@@@@@@.
56
+
@@@@.@@.@@@.@.@@@.@..@@..@@.@@.@.@@@@@@@@..@@@.@.@@..@..@@@.@.@@@@@@.@@.@...@@.@@@@@.@@.@@@@..@...@.@.@.@@@@@@@@.@.@.@@@@@@....@@.@..@..
57
+
..@.@@@@@@@@@.@.@@...@@.@@@@.@....@@..@@@..@@@@@..@.@@@.@@@@.@...@@@@@..@.@.@.@..@@..@@@@@@.@.@@.@.@@@..@.@@@...@..@.@@...@@@@.@.@....@@
58
+
@@@@.@@@.@@@@@@.@.@@@@.@@.@@@...@@@..@@@.@@@@@..@@.@@@@@@@.@@.@@@@.@@@.@@.@.@@@.@..@@@...@@..@..@.@@.@@..@.@@@@@@@@@@@.@....@..@.@.@.@@@
59
+
@@@.@@@@@@...@.@@@.@@..@@.@@@@@@@...@@@@.@@@@@@.@@@@..@@...@@..@@@@.@@...@@..@@@@@..@@@@@.@@@.@@@@@@.@.@.@@...@.@.@.@@.@@.@..@@...@@@..@
60
+
.@@@@.@@@@.@...@@@@.@@@.@@@.@@@@@.@@@@...@@.@.@@@....@@@@@.@@@@@@@@@.@@@.@@@..@@.@...@@@@.@@@@..@@@.@@@.@@@@.@@@@.@.@@@@@@....@@.@@...@.
61
+
@@@.@.@@@@@@@@.@@@@@@.@@@@.@...@@@..@@.@@@@.@.@.@@.@..@@@@@@.@@@@.@..@@@@.....@..@@@.@@.@@@.@.@.@@.@.@@@.@.@@@@@@@.@@.@@.@@@.@@@..@@@..@
62
+
@@..@.@.@.@@..@.@@.@@@@@.@@@..@.@@.@.@@.@@.@@@@@.@.@@@@@.....@@@.@....@@@..@@.@@@@@@@@@@@@..@@@@.@...@.@@.@@@@@.@@..@.@.@..@@@.@@..@@@..
63
+
@@@@@.@@@.@@.@.@.@...@@.@.@@@.@..@@.@@@@@@@.@@@.@.@@@.@@@@.@.@..@.@@@@..@.@@@@@.@@@@@@@@@@.@@@@@@.@@@@@.@@.@.@@@@@@@.@@@@@@@....@@.@@@@.
64
+
@.@.@@@@..@@@@@.@@.@@@.@.@@@@@@@.@@@@.@@@@@@@...@.@.@.@...@@.@@..@@..@..@.@@.@.@.@..@.@@@.@@@@@@@.@...@.@@.@@..@@@@@@@..@@@..@@@.@@@...@
65
+
@@...@@@@.@@.@@...@.@@@.@@@.@@@.@@@@@@@@@@@@@@@.@@.@....@@@@@@@@.@..@@..@@...@@..@.@@..@.@@.@@@@@@..@@@@@@@@@@..@@@.@@.@@@.@.@.@@@@.@.@@
66
+
..@.@.@@..@@.@@.@@..@@.@.@@@@.....@.@@@@@@.@.@@@..@....@@@@@@@.@.@@.@@@@@..@@@@..@@.@.@@@@@@.@.@.@.@@@..@@..@@.@@@@..@..@@...@...@@@.@@@
67
+
@.@@@@@.@@.@@..@@@@@.@@@@.@.........@.@@@...@@@.@..@@@@@@.@@@@.@@.@@.@@...@@@@@.@.@@@@..@@.@@@@@@.@@@@.@@.@@@@@@..@...@@@@.@..@..@...@@.
68
+
@@@.@@@@@.@@@@@.@.@@.@@@@@@......@@@@@.@@@@@@@@@.....@...@..@...@.@..@.@@@@@.@@@@.@.@@@@@@.@..@@..@@.@@.@@.@.@@@@@@.@@..@@@.@@.@@.@@@@@.
69
+
@.@@@@..@.@@.@@.@@.@@@@@@..@.@..@@....@@@@@@@@@.@@@@.@@@@...@@.@@..@.@...@...@@.@.@@@@..@.@@@@.@@@@..@@@@@@@@@@@@@@@@.@@@@@.@@@..@.@@@@.
70
+
@..@@@@.@.@@..@@@@@@@@@@.@@@@@@.@.@@@@@@@.@@@.@@@@.@@@@@.@@.@@@.@@@@.@@@@@@@..@@@@@@@.@@.@@@@@@.@@.@.@@@.@@@.@.@@.@@@..@.@@@@@.@.@.@@@@.
71
+
.@@@@@.@@@.@@@@@@..@@@@@@@@@@@@.@....@..@@.@@@@@.@.@@...@@@.@@@@.@@@@.@@.@.@..@@@@@..@@@..@@@...@@...@@..@.@..@@......@@@@@@...@.@@@.@@.
72
+
@@@@@.@@.@@.@@@@@..@..@.@@@.@@@@@..@@@@@.@@...@@..@.@..@@.@..@@@@.@...@@@@.@.@@.@@...@@.@.@@.@.....@@@...@@@.@@@.@.@@@@@@.@@@.@@@..@@@@@
73
+
@@@.@@@@.@@@.@@.@@@@@@.@....@....@@@.@@.@@@@@@@@@@.@@.@..@..@@@.@@@@.@@@@.@.@.@.@@@.@@@...@.@@@@..@@.@@@@@@@@@@.@@@.@@..@@@.@@@.@.@..@..
74
+
@@@@.@.@.@@@@@...@@@.@@@@@@@@...@@.@@..@@@...@@@@@..@@.@@@@@@@@@.@@@@..@..@.@@.@@@@@@@@@@@..@@@...@.@@.@@..@.@@@@@@....@@..@..@@@.@..@@.
75
+
@@@@@.@@@..@@@@.@@..@@@@.@.@@.@@.@@@....@@@@@.@.@@.@@@@@..@@@.@@..@.@....@@.@..@@@@.@@.@.@.@.@..@@.@.@@.@.@@@@@@.@@@@.@@@@@.@@@....@@@.@
76
+
@.@.@.@.@.@..@@.@@.@@@@.@..@@...@.@@@...@@....@@@@@.@....@..@@.....@...@@@.@@@@.@@@@@.@..@@@@.@@@@@.@@@...@....@@...@@.....@@@..@@..@..@
77
+
@@@@@..@..@..@@.@@.@@@@.@@.@@@@@@.@..@@..@@..@.@@.@@.@....@@@@@@..@@@@@.@@@...@.@@@.@.@@@@@@@.@@@@.@@...@@@.@....@.@@@@.@@@@@.@.@@...@@.
78
+
.@@.@@@@.@.@@@.@.@.@..@@.@@@@.@.@@.@.@...@@@.@@@@@@@@@@.@@@@.@@.@@.@..@..@@.@@@@.@@.@@.@@@@..@@@.@@@@@.@@.@@@@@@@@@@@...@.@@@@@..@@@@...
79
+
@.....@@@@@.@@@@.@@@.@.@.@...@@.@@@.@.@......@..@.@@@@.@.@@@@..@.@@.@..@@@..@...@@@.@@@..@@.@@@@@@@@.@@..@@@@.@@@@@@.@..@.@@@.@@@.@@@..@
80
+
@@@@.@@@@.@@@.@.@@@@.@.@..@@@@@@@@@@@@@@..@@.@..@..@@@@@@@.@@.@.@@@@@@.@@@@@@@.@@@..@.@@..@@.@.@.@@@@....@@@@@@@..@@.@.@@@@@@@@.@.@.@@@.
81
+
.@@@@@@@@..@@@.@.@@@@@@@@@@@@...@.@@@.@@@@@...@.@@.@@.@@@@@@@@...@..@.@@@.@@@.@@...@@@@@..@@@.@@@.@@@...@..@@.@@@@@@@.@.@..@@@.@..@@@@.@
82
+
@.@@..@...@@@...@@@.@@.@.@@...@@@@@@@@@.@@@.@@@@@@@@@..@@..@..@.@@@.@@@@@...@@@@..@@.@.@@@@..@@@.@@.@@..@@...@@@@@@@.@.@@@@..@@@@.@.@@@.
83
+
@.@@.@.@@....@.@.@..@.@@.@.@@@.@.....@@.@.@....@@@.@@.@@@@.@@@.@@@@@..@.@@@@@..@..@@..@@.@@@@...@@.@@@.@@@@@..@@..@@@@.@@@@@@..@..@.@..@
84
+
@@@@@@.@.@.@@.@.@@@..@.@.@@@@..@@@@.@.@.@.@.@...@@.@...@.@@@@@..@...@@..@@.@@@.@.@@.@@@..@@@.@@@.@.@@@@.@@@@..@@@.@@.@@@@@@.@...@.@@.@@@
85
+
@@@@@@..@@.@@.@@@.@@@@@@..@@@....@@@...@@@...@@@@@@@.@@@@.@@@@@@@.@@.@..@@@.@@@@@.@@@@@@...@@@.@@...@.@...@@@@@@..@@@@.@.@@@@@.@..@.@.@@
86
+
@@@@.@@@..@@.@@..@@@@@..@...@.@@.@.@@.@.@..@@..@@@@...@@@..@.@@@@.@..@@.@..@@.@@@@@@@@...@@@@@.@.@.@..@@@.@.@@@.@@.@@@@.@@@...@@@..@@..@
87
+
@@@@@@@@@@..@@@@.@.@.@@@@@..@@..@@@@@@@@@@@@@@@@@@.@@...@@@@@@@@..@.@@..@..@@...@@@@@@@.@@@.@@.@@@.@@..@@..@@@@..@@@@..@@@.@...@@@@..@@@
88
+
@@.@@@@@.@.@@.@.@@.@@@@.@.@.@..@@@@@.@@@.@@.@@@@.@@.@@@.@@..@@.@@..@@@.@@@@.@.@...@@..@@.@@@@@@@.@@@@@@@....@@@@.@.@@.@..@@@.@@@@@@@.@.@
89
+
@@.@@@.@@..@.@@.@...@@..@.@..@..@@@@@@@@@@@@@.@@@@.@@.@@@@@@@@@.@...@..@.@@.@@@@@@@..@.@.@@@.@@.@@@...@.@@@@@@@....@@@@@@@@@..@@.@.@@@@.
90
+
@.@@@@@@@..@.@@@@@@.@@@@@@@@@@..@...@@@.@@@.@@@..@.@@@@@.@.@.@@@@...@@.@.@@@@@@@@@..@@@..@.@..@@.@.@@@@@@.@..@@@@.@@...@@.@@..@@@..@..@@
91
+
@@.@@@@@@.@.@@@@@..@@@@.@@@@@.@@@@@@@.@.@.@@@@.@@@@.@@@@.@@.@@@..@.@@@@@@.@.@..@@@@@@@@@.@@.@@.@@@@.@@...@@@.@@.@.@..@@...@@@..@@@@@@.@@
92
+
@@..@.@.@@@@.@@.@@@@@@@@@...@@@@@@.@.......@@.@.@@..@.@@.@..@@@.@.@@@@@..@.@@@..@......@.@.@@..@@@..@@.@@@@@.@@@..@.@...@@@@.@..@.@@.@@@
93
+
@@.@..@.@.@@.@@@.@..@@@@..@.@.@@@@@@@.@@..@@@.@@.@@..@.@@@@@.@.@.@.@@@.@@@@@@@@.@@...@..@.@.@@@@.@@@@.@.@@@@.@@@.@.@@@@...@@@@.@@@.@@..@
94
+
@@..@.@@@@@@.@.@....@.@@@@.@@@@.@@@.@@@@@@.@.@..@@..@.@@.@@..@@.@@.@@@@@.@@@@@@@@...@@@@..@@@@@.@@@@@..@.@@.@@@@@@@@@@.@.@@@@....@..@@.@
95
+
@.@..@.@@@@@@.@@.@@.@.@@.@@@@..@@@.@@@.@..@.@@@@@@@@@@@.@.@@...@@.@.@.@@@@@@..@@@@...@@@.@@@@@@@@@@@@@@@@.@.@@@@@.@.@.@@@@@@@@@@@@..@@..
96
+
@@@@.@@..@@@@@@@.@@@..@@@@.@@@.@.@@.@@@@....@.@@@.@.@..@@@.@@@@@..@@.@@@@@@@@@@@@@@@@@....@@@@@@.@@@@@@.@.@@@.@...@...@@@@@@.@.@@...@.@.
97
+
.@.@@@@@@@@..@@@@@...@@@@@@...@@..@...@..@@.@...@.@@...@@@@@.@.@@@.@...@.@@.@.@.@@.@@@@@@.@@.....@@.@@@@..@.@@@.@.@@...@@@@@@@@@@@.@@.@@
98
+
@@@@...@@.@@.@@.@@@@..@@@.@.@@.@@@@.@@...@@@...@@@.@@.@@@@@@.@.@@@@..@@@.@@@..@@..@@.@.@@..@@@@@@.@@@..@@@..@@@...@@@.@@.@@...@@@@@@.@.@
99
+
@@@@...@..@@@@.@@@@@.....@@@..@@@..@.@@.@..@@...@..@@@..@@.@.@@@@@@@@@@.@@@@..@@@@@.@@...@@..@@.@...@@......@@.@.@@@@@@@@@@@@@@@.@@..@..
100
+
@@@@.@@@@@@@@.@.@@@.@@@.@@...@@@@@.@.@@@@..@@.@@@.@.@@@@@...@@@@.@.@.@@.@@@.@.@.@.@@@@@...@@@.@@@@..@@@.@@@..@@.@@@@@@@@@@@@.@@.@.@@@@@@
101
+
.@@....@@@@@@@@@@@@..@.@@..@..@@@...@.@......@@@@.@.@@@@@@@.@@..@@..@@..@@..@@@@@@@@@@.@@.@.@@@@.@@@..@@@@@.@@.@@@@.@..@@.@@...@@@@@@@@@
102
+
.@@@..@..@@@@.@@@..@@..@@@.@@..@@.@.@@@.@@@.@@..@.@@.@..@.@@.@..@@@.@..@@@.@..@@@.@@.@@@.@@.@@...@.@@@..@@@@.@.@@.@@.@..@@@@.@@.@.@@@@@.
103
+
@.@@@@..@@.@.@@@@..@.@@.@@@.@.@@@.@.@..@@.@@@@@@.@@@.@@@..@@@@@.@@...@.@@.@@@.@@@...@@.@@@..@.@@@.@.@@@..@@.@@@@@@.@@@@@@@@@@@.@.@@.@@@@
104
+
@@@@@@@@.....@@@@@.@@@@.@@@@@@..@@...@..@@.@@@@@@@@@@@..@@@@@@@@@@@@@@@.@@@..@@@@..@@.@.@@@.@@@.@..@@..@@..@@@.@.@@@..@@..@@..@@@.@.@@@.
105
+
@.@@@@..@@@..@@...@@.@@@@@..@@@@@@@@.@@...@..@@@@.@@.@.@@...@.@@.@@.@.@@@..@@@@@@.@@@@@@..@@@.@@...@@@@.@@@@.@@.@.@@.@..@@@.@.@.@@..@@.@
106
+
@.@@.@@@@@@..@..@@@.@@@..@@..@@@..@...@@@@@@.@@.@@@..@.@@@@.@.@.@@.@.@..@.@..@..@@@.@@@@.@@@.@@@@.@@@.@@.@..@@..@@.@@..@@@@@..@@.@@@.@..
107
+
.@@@@@@@.@..@@.@@@@@@@.@..@@@@@@@.@@@@@@@@@..@@@@.@..@.@.@@@.@@@@..@.@@@.@.@.@@@@@....@...@@@@@@@@.@@@@@@@@@.@@@...@@..@@@.@@@@@@@@.@@@.
108
+
@@.@@@@@@@..@@@...@@.@@.@@.@...@@@@@@@@@@.@@.@@.@@@...@@..@@@@@@@.@@@.@.@@.@.@@..@@.....@@.@@@@..@@@@.@.@.@.@@..@..@.@.@.@@@@.@@@@@@..@@
109
+
@.@@@@.@@.@@@.@@...@@@.@.@@@..@@@@..@@@@@@.@@@..@@.@.@.@.@@@@@@.@@@@@@@.@@..@@..@@.@.@.@@@@.@.@....@@.@..@..@.@@@.@.@@@@..@@@@@..@..@@..
110
+
@..@@@.@.@@@.@@@..@.@.@@@.@@@@@@@..@@@@@.@.@.@@@.@.@.@.@@@.@@@.@@@..@@@.@@@...@...@@@.@.@..@@.@.......@@..@@.@..@@@.@...@..@@..@.@@@@@@@
111
+
..@@@.@@@@@@@@@@@@.@.@.@@@@@.@@.@.@@@@@@@.@@@@.@@..@@..@@@@.@@@@@@.@@@.@@.@@.@@.@@@@@@@@@...@.@..@.@@@@@@@..@@@.@@@@@@...@...@.@.@.@....
112
+
@@@@.@@.@.@@@@..@.@@@@@..@.@.@.@.@@@@@@@@..@@@@@.@@..@@@@@.@@@...@.@@@..@@@.@.@@@@@.@..@..@@@@@@@..@@@@...@..@@.@@@@@@..@.@@..@@@@@..@..
113
+
@@.@@@@.@@@@@@@@@@..@@.@@.@@..@.@@...@..@@@.@@.@.@@.@@.@@@@..@@.@@.@@.@@.@@@@..@@@@@@@@@@@.@@.@.@@@.@@@@@@@@@@@@@@@@@@..@@@@.@@@.@..@..@
114
+
@@@..@@@@@.@..@@@@@@.@@.@@@@...@@@.@@@..@@@@.@@@.@..@.@.@@@@@.@@@@@@@@.@@@..@@@.@@.@@@...@@.@@.@@@...@@@@@@.@....@..@@@@@..@@.@@@@.@.@.@
115
+
.@@.@@@@@@.@@@@@@@@..@....@.@@@.@@@.@.@@@@@.@@.@@@@@@@.@.@..@.@.@@@.@@.@....@@@@.@@@@@.@@@@@.@@@@..@.@.@@@@@@@@@.@@@@@@.@@.@@@@.@.@.@@.@
116
+
.@.@@.@@@@.@@@@.@.@@@@@.@@@@....@..@@@@@@@@..@@.@@..@..@@@@..@@@@@@..@@.@@.@@.@.@@...@...@@@@@@.@@@@@.@.@.@.@@.@.@.@@@.@@@..@.@@@@@@@@.@
117
+
.@@@@.....@@.@@.@@.@@@@@@.@@@@@@@.@@@@@@.@...@@.@..@.@.@@@@@.@..@..@@..@.@..@@@.@@@@.@@@@@@@..@@.@.@@@@@@@.@@@@@..@.@@@@@...@.@@@@@@@.@@
118
+
@@..@@.@@@.@..@.@@...@.@..@.@@@@..@@.@@@.@@@@@@@@@.@@.@...@....@@@.@.@..@.@.@@@@.@.@@@@.@@@..@@@@@.@.@@@@@@@.@.@.@@@...@.@.@@@@@...@@@@@
119
+
..@@@@.@..@@...@@@.@@@@.@..@@.@..@.@.@@.@@@@.@@@@@..@@@.@@..@.@@@.@@@@@@@@.@.@.@.@@@....@@@@@@.@..@.@..@@@@@..@@@.@@.@@@.@...@.@@@.@@@@@
120
+
@..@@..@.@..@@@@@...@@@.@@@@@@@@@@@@@@..@@@@@@@.....@@@..@@@@@.@@@@@.@@@@@.@..@@.@..@..@@..@..@@@@.@@.@@@@@@@@@@.@@@@@@@.@@@@@.@.@.@@@@.
121
+
@....@@@@@@@@@...@@@@@@@@.@..@.@@.@@@@.@@@..@@@@..@@@@...@@@@@.@@@@@@.@@..@@@@@@@..@@@@@.@@@@@.@@@@.@@@..@.@.@@.@.@@@@.@@@@@.@@@@.@.@.@.
122
+
@@@@@@@@.@...@.@.@@@@@@@@.@.....@@@@@..@.@@@@..@@.@@@@...@..@@@@.@@.@@@@@.@@@@@@@@@...@.@@@@@@@@@@@@...@..@..@@..@.@@.@.@@.@@@.@@@.@@@.@
123
+
@.@@@@@@@@@@@@@@@.@@.@@@@@.@.@@@@@.@....@....@@.@@@@..@@@@@@.@.@@.@@@@@.@....@.@@@@@@.@@@.@@..@@@@@@@.@@@@@@@@..@@.@@.@@@@...@@.@@.@..@@
124
+
.@@@@..@@@.@@@@.@@@@@..@@.@@@..@@.@.@....@.@@@@@@@.@.@...@@@@@@@..@@@.@.@@.@@@@.@.@.@.@@@..@.@@.@.@@@@@@@.@..@.@@@.@@@.@@@...@@.@.@@@@@.
125
+
..@@.@@@@.@.@.@.@@@.@.....@.@@@.@@...@.@.@@..@@@.@@..@@@@@@@@.@.@...@@@@@@.@@@@@..@.@.@@@@..@@@@.@@.@.@..@@@@@...@.@@@@.@@.@..@@@@.@@@@@
126
+
@@@@@@.@@.@@@@.@@.@@.@.@@@@@.@@.@@@.@..@@.@..@.@@@@.@@@...@@@@@@.@.@...@@@@.@@@.@@@@@.@@@@..@@.@@@@.@@@.@@@..@@.@@@@@@..@@@....@.@.@.@.@
127
+
.@@@@...@..@@@@....@@@..@@..@..@..@@.@.@@@@.@@@@@@@@@@..@.@@@@@@@@@..........@.@@.@.@@@.@@@.@@@@@@@@@@@.@.@@@@..@@.@.@@.@...@@.@@@...@@@
128
+
..@..@.@@.@@@@@.@@@.@@.@.@@@@@@@@@@...@@@@@@@@.@@@@@@@@..@@@.@@@@..@.@@@..@...@.@@.@@@@@..@.@@@@@@@.@.@@.@@..@@@@@....@@@@@@@@@@.@@@...@
129
+
@..@@..@.@@..@..@@@@@.@.@@@@@.@@@@@@@.@@..@@.@.@@@.@.@@.@@@@@@@@@....@@@@.@@@@.@.@...@@@@@@@@@@@.....@.@@@@...@@...@.@@@@@@@@@...@..@@..
130
+
@..@.....@@@..@.@.@@@@.@.@@@@@.@@@.@@@@.@.@@@@....@@.@@@@.@@@@@.@@@@@@@@@@@@@..@@@@...@@@...@@@...@.@@@@.@@@.@@.@@@@@@@@..@.@@@@@.@@@.@@
131
+
@@@@@@.@.@@@@.@@..@@@.@@@@@@.@@@@@@@@@@@@.@@@..@@@@@@@@@@@@@@@@.@@....@@@..@@@@@...@@@@@@.@.@@..@@..@@@.@..@.@.@@..@@@.@@@@..@@@@.@.@@@@
132
+
@.@@@.@@@@..@@@.@@@@.@@@@@.@@@@@@@@.@@.@@@@@.@.@..@@@@@...@@@..@@..@@@.@.@.@@@..@@@@@@@@@@@@.@.@@.@.@@..@.@@.@@.@@@..@@@.@@.@@.@@@@.@@.@
133
+
@@.@@.@@@@.@.@@...@@@@@.@..@@@.@@@@.@..@.@..@@.@@..@@...@.@.@@@@.@@@@@@...@@.@@..@...@@@@@.@@.@@.@@..@@@@@..@.@@.@@.@..@@..@.@@@@@@@.@@@
134
+
@@.@.@..@@@@..@@@@.@..@.@@.....@.@.@@.@@@@@@@@@@@..@....@@@..@@@@..@@@.@@@@..@..@...@.@@@@@@.@@@.@..@.@@@.@.@.@@.@.@@@..@@@@@@.@@..@@@.@
135
+
..@@@@..@@..@.@@..@@.@..@.@@..@@@.@.@....@.@..@@@..@@.@.@@@.@.@@.@..@@@..@.@@..@@@..@@@.@@@@@@@@@@.@@.@..@@@@@.@....@.@@.@@@@@.@@@@@@...
136
+
@@@@@@@.@...@.@.@.@..@.@@@.@@..@@.@..@@@@@@@@...@@@@@@@..@@@.@@@@@..@@@.@@.@@@@@.@.@@@@.@.@@.@.@@..@@@..@@..@@@@@@@@.@.@@.@@.@..@.@.@.@@
+10
day4/shortinput.txt
+10
day4/shortinput.txt
+115
day4/src/main.rs
+115
day4/src/main.rs
···
···
1
+
use std::fmt::Display;
2
+
use std::ops::Add;
3
+
4
+
// what will be used as my config here
5
+
6
+
struct Warehouse {
7
+
layout: Vec<Vec<Option<char>>>,
8
+
width: u16,
9
+
height: u16,
10
+
}
11
+
12
+
impl Warehouse {
13
+
fn get(&self, x: u16, y: u16) -> Option<char> {
14
+
*self.layout.get(y as usize)?.get(x as usize)?
15
+
}
16
+
17
+
fn set(&mut self, x: u16, y: u16, value: char) {
18
+
// TODO : This is not a complete check, could cause issues
19
+
if y < self.layout.len() as u16 && x < self.layout[0].len() as u16 {
20
+
self.layout[y as usize][x as usize] = Some(value);
21
+
}
22
+
}
23
+
24
+
fn load_from_file(filename: &str) -> Warehouse {
25
+
let contents = std::fs::read_to_string(filename).expect("Failed to read file");
26
+
let width = contents.lines().next().unwrap().len() as u16;
27
+
let height = contents.lines().count() as u16;
28
+
let layout = contents
29
+
.lines()
30
+
.map(|line| line.chars().map(|c| Some(c)).collect())
31
+
.collect();
32
+
Warehouse {
33
+
layout,
34
+
width,
35
+
height,
36
+
}
37
+
}
38
+
39
+
fn count_neighbors(&self, x: u16, y: u16) -> Option<u8> {
40
+
//println!("Counting neighbors at ({}, {})", x, y);
41
+
let mut neighbors = 0u8;
42
+
for n_y in y.saturating_sub(1)..y.add(2).min(self.height) {
43
+
for n_x in x.saturating_sub(1)..x.add(2).min(self.width) {
44
+
if n_y == y && n_x == x {
45
+
continue;
46
+
}
47
+
if let Some(cell) = self.get(n_x, n_y)
48
+
&& cell == '@'
49
+
{
50
+
neighbors += 1;
51
+
//println!("Neighbor found at ({}, {})", n_x, n_y);
52
+
}
53
+
}
54
+
}
55
+
Some(neighbors)
56
+
}
57
+
}
58
+
59
+
impl Display for Warehouse {
60
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
61
+
for row in &self.layout {
62
+
for cell in row {
63
+
match cell {
64
+
Some(c) => write!(f, "{}", c)?,
65
+
None => write!(f, ".")?,
66
+
}
67
+
}
68
+
writeln!(f)?;
69
+
}
70
+
Ok(())
71
+
}
72
+
}
73
+
74
+
fn main() {
75
+
// let printer_department = Warehouse::new(10, 10);
76
+
let mut printer_department = Warehouse::load_from_file("input.txt");
77
+
// println!("{}", printer_department);
78
+
79
+
let mut removed_rolls = 0;
80
+
81
+
loop {
82
+
let mut to_remove = Vec::<(u16, u16)>::new();
83
+
for (y, row) in printer_department.layout.iter().enumerate() {
84
+
for (x, cell) in row.iter().enumerate() {
85
+
match *cell {
86
+
Some(c) => {
87
+
if c != '.'
88
+
&& printer_department
89
+
.count_neighbors(x as u16, y as u16)
90
+
.unwrap_or(0)
91
+
< 4
92
+
{
93
+
removed_rolls += 1;
94
+
to_remove.push((x as u16, y as u16));
95
+
// print!("x"); // used for debug printing each removal
96
+
} // else {
97
+
// print!("{}", c);
98
+
// }
99
+
}
100
+
None => continue,
101
+
}
102
+
}
103
+
// println!();
104
+
}
105
+
if to_remove.is_empty() {
106
+
break;
107
+
}
108
+
// println!("== REMOVING ROLLS {:?}==", to_remove);
109
+
for (x, y) in to_remove {
110
+
printer_department.set(x, y, '.');
111
+
}
112
+
}
113
+
114
+
println!("Removed {} rolls", removed_rolls);
115
+
}
+7
day5/Cargo.lock
+7
day5/Cargo.lock
+6
day5/Cargo.toml
+6
day5/Cargo.toml
+1185
day5/input.txt
+1185
day5/input.txt
···
···
1
+
318557298670257-320203701512914
2
+
257988476988123-258475833446953
3
+
239506567904360-239506567904360
4
+
159092054628984-160660945293660
5
+
33508345158641-33508345158641
6
+
535574085704173-542529962005080
7
+
259223906521657-259570839796231
8
+
107124201554838-107491094003520
9
+
408597058494409-408747547856220
10
+
204209427005525-210465015733810
11
+
191953754819394-199391870677509
12
+
184436261451506-184436261451506
13
+
121406307434528-126395493108292
14
+
112658959754792-119541264499023
15
+
256813240979222-257191182675058
16
+
332175956014557-336020407709884
17
+
464523147874452-468780439477643
18
+
232531131562106-239506567904359
19
+
342509931670831-347620075555999
20
+
426811759586883-431461654697663
21
+
439839000198979-440189239373558
22
+
403011203089000-403697076743498
23
+
448512942059195-448512942059195
24
+
156253640950711-157569806110925
25
+
251421563132760-251960455619173
26
+
398112870005920-400840791809897
27
+
100861951548231-101340153826899
28
+
154107174125987-155481194818161
29
+
257508907299303-257988476988123
30
+
133819578135252-136632073039210
31
+
104123582918543-104968750841600
32
+
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+
195016335758222
1086
+
353649149980192
1087
+
264336950295167
1088
+
4675008244642
1089
+
244838066533953
1090
+
86380915635612
1091
+
373321323889030
1092
+
257018302696040
1093
+
317729975152833
1094
+
162821630418079
1095
+
51124731456710
1096
+
17521048328646
1097
+
244485151006487
1098
+
411459747565108
1099
+
505368276403700
1100
+
457152675626419
1101
+
115973709823526
1102
+
64997326037847
1103
+
384913615852591
1104
+
252777693200950
1105
+
102471307236593
1106
+
248246908607238
1107
+
399532688766128
1108
+
202742767493523
1109
+
25985180392431
1110
+
15749343373589
1111
+
43206582894726
1112
+
83039920783268
1113
+
245491426920792
1114
+
79547799536865
1115
+
336525939206498
1116
+
470302075672304
1117
+
98289916731124
1118
+
493081434330905
1119
+
227129571564834
1120
+
43382248228452
1121
+
41383720878603
1122
+
409015203991873
1123
+
379138448601500
1124
+
265770637863690
1125
+
369882766021769
1126
+
236749388970477
1127
+
13714547496397
1128
+
106916998510513
1129
+
146212494638758
1130
+
395355332494797
1131
+
510383682272307
1132
+
312867660111995
1133
+
491045869854993
1134
+
432346805589946
1135
+
142507900477620
1136
+
459437667431071
1137
+
475326095967763
1138
+
358780261354781
1139
+
495768093822832
1140
+
553783723287429
1141
+
238988372735656
1142
+
428037435579619
1143
+
555676629939986
1144
+
6569416135160
1145
+
40339825458446
1146
+
6805352333031
1147
+
406102882050559
1148
+
383675706554757
1149
+
469276503152653
1150
+
424244960992367
1151
+
430855515778841
1152
+
463510003020650
1153
+
507037663031647
1154
+
282964152294489
1155
+
43211162095545
1156
+
17596796127023
1157
+
431526400730170
1158
+
34221921264101
1159
+
230590892573244
1160
+
420660224485607
1161
+
431757341706063
1162
+
46679168937024
1163
+
423935002386417
1164
+
330890302847103
1165
+
148504854235777
1166
+
61089854104959
1167
+
464350750612206
1168
+
505291047655938
1169
+
292927188450580
1170
+
393259565407806
1171
+
205867651807804
1172
+
106082860951994
1173
+
422291641499795
1174
+
283552442624759
1175
+
385952211585238
1176
+
196296595800486
1177
+
510284000293178
1178
+
286504876483372
1179
+
221070050936993
1180
+
119713580986365
1181
+
546209693398181
1182
+
278008535048920
1183
+
552156651060434
1184
+
195803904631463
1185
+
364818531904503
+11
day5/smallinput.txt
+11
day5/smallinput.txt
+201
day5/src/main.rs
+201
day5/src/main.rs
···
···
1
+
use std::cmp::Ordering;
2
+
use std::fmt::Debug;
3
+
use std::{cmp, fs};
4
+
5
+
#[derive(Debug)]
6
+
struct Ingredient {
7
+
id: u64,
8
+
}
9
+
10
+
// Describes a range of ingredient ids
11
+
struct IngredientRange {
12
+
start: Ingredient,
13
+
end: Ingredient,
14
+
}
15
+
16
+
// Used to store and manage IngredientRanges
17
+
struct IngredientDB {
18
+
ranges: Vec<IngredientRange>,
19
+
}
20
+
21
+
// #[derive(Debug, Clone, Copy, Eq)]
22
+
// don't think i need to do this deriving stuff
23
+
// i find it a bit scary tbh
24
+
enum RangeCap {
25
+
Start(u64),
26
+
End(u64),
27
+
}
28
+
29
+
// If both elements have the same type and value, they are equal
30
+
impl cmp::PartialEq for RangeCap {
31
+
fn eq(&self, other: &Self) -> bool {
32
+
match (self, other) {
33
+
(RangeCap::Start(a), RangeCap::Start(b)) => a == b,
34
+
(RangeCap::End(a), RangeCap::End(b)) => a == b,
35
+
_ => false,
36
+
}
37
+
}
38
+
}
39
+
40
+
// Implementing an ordering for these Range Caps (better name? terminal?)
41
+
impl cmp::PartialOrd for RangeCap {
42
+
fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
43
+
match (self, other) {
44
+
// if both values are Starts or both are Ends, compare values normally
45
+
(RangeCap::Start(a), RangeCap::Start(b)) => a.partial_cmp(b),
46
+
(RangeCap::End(a), RangeCap::End(b)) => a.partial_cmp(b),
47
+
// If they are equal, make sure Starts always go before Ends
48
+
(RangeCap::Start(a), RangeCap::End(b)) => {
49
+
let result = a.partial_cmp(b);
50
+
if result == Some(Ordering::Equal) {
51
+
Some(Ordering::Less)
52
+
} else {
53
+
result
54
+
}
55
+
}
56
+
(RangeCap::End(a), RangeCap::Start(b)) => {
57
+
let result = a.partial_cmp(b);
58
+
if result == Some(Ordering::Equal) {
59
+
Some(Ordering::Greater)
60
+
} else {
61
+
result
62
+
}
63
+
}
64
+
}
65
+
}
66
+
}
67
+
68
+
impl IngredientDB {
69
+
// Initializing an IngredientDB is basically parsing an input string and initializing the ranges vector.
70
+
fn new(range_list: &str) -> IngredientDB {
71
+
let mut ranges = Vec::new();
72
+
for l in range_list.lines() {
73
+
let splitline = l.split('-').collect::<Vec<&str>>();
74
+
ranges.push(IngredientRange {
75
+
start: Ingredient {
76
+
id: splitline[0].parse().expect("Failed to parse ingredient ID"),
77
+
},
78
+
end: Ingredient {
79
+
id: splitline[1].parse().expect("Failed to parse ingredient ID"),
80
+
},
81
+
});
82
+
}
83
+
IngredientDB { ranges }
84
+
}
85
+
86
+
// We can check if an ingredient is fresh by comparing it to our ranges and seeing if it falls within any of them.
87
+
fn is_fresh(&self, ingredient: Ingredient) -> bool {
88
+
self.ranges
89
+
.iter()
90
+
.any(|range| range.start.id <= ingredient.id && ingredient.id <= range.end.id)
91
+
}
92
+
93
+
// This function is called clean_ranges_stack bc i initially tried to do something else and it was a nightmare
94
+
// Basically we initialize a list of RangeCaps, then sort them by value
95
+
// Then we go through and push to the stack when we find a Start, pop when we find an End
96
+
// If the end we find leaves our stack empty, we push a new range to our ranges vector
97
+
// Finally, we replace the internal ranges of this IngredientDB with our new, optimized ranges.
98
+
fn clean_ranges_stack(&mut self) {
99
+
let mut range_list = Vec::<RangeCap>::new();
100
+
for range in &self.ranges {
101
+
range_list.push(RangeCap::Start(range.start.id));
102
+
range_list.push(RangeCap::End(range.end.id));
103
+
}
104
+
// Sort range list by Partial Ordering
105
+
// this shouldn't fail or something's wrong
106
+
range_list.sort_by(|a, b| {
107
+
a.partial_cmp(b)
108
+
.expect("RangeCaps should be able to be compared")
109
+
});
110
+
111
+
// initialize our stack and output range vectors
112
+
let mut range_stack = Vec::<u64>::new();
113
+
let mut new_ranges = Vec::<IngredientRange>::new();
114
+
115
+
for range in &range_list {
116
+
match *range {
117
+
// always push Starts to the stack
118
+
RangeCap::Start(id) => range_stack.push(id),
119
+
RangeCap::End(id) => {
120
+
// if stack has more than 1 element, pop the top and discard
121
+
// otherwise construct an IngredientRange with the final element and push it to the new_ranges vector
122
+
if range_stack.len() > 1 {
123
+
range_stack.pop();
124
+
} else {
125
+
new_ranges.push(IngredientRange {
126
+
start: Ingredient {
127
+
id: range_stack.pop().unwrap(),
128
+
},
129
+
end: Ingredient { id },
130
+
});
131
+
}
132
+
}
133
+
}
134
+
}
135
+
136
+
self.ranges = new_ranges;
137
+
}
138
+
139
+
// Simple math function that subtracts ends of all the ranges from the starts and adds 1 to be **inclusive**
140
+
fn count_fresh(&self) -> u64 {
141
+
let mut fresh_count = 0u64;
142
+
for range in &self.ranges {
143
+
fresh_count += range.end.id.saturating_sub(range.start.id) + 1;
144
+
}
145
+
fresh_count
146
+
}
147
+
}
148
+
149
+
impl Debug for IngredientRange {
150
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
151
+
write!(
152
+
f,
153
+
"IngredientRange {{ \n\t[{}-{}] of length {}\n }}",
154
+
self.start.id,
155
+
self.end.id,
156
+
self.end.id.saturating_sub(self.start.id) + 1
157
+
)
158
+
}
159
+
}
160
+
161
+
impl Debug for IngredientDB {
162
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
163
+
write!(f, "IngredientDB {{ ranges: {:?} }}", self.ranges)
164
+
}
165
+
}
166
+
167
+
fn main() {
168
+
let in_file = fs::read_to_string("input.txt").expect("Failed to read file");
169
+
170
+
// Split our input file into two parts based on newlines and make sure there are exactly 2 parts
171
+
let file_sections = in_file.split("\n\n").collect::<Vec<&str>>();
172
+
assert!(file_sections.len() == 2);
173
+
174
+
// Parse first part of the file and initialize an IngredientDB
175
+
let mut ingredient_db = IngredientDB::new(file_sections[0]);
176
+
177
+
// before range cleanup
178
+
// println!("Ingredient Database: {:?}", ingredient_db);
179
+
// cleaning our ranges up here gives us better performance for the first part! since there are less ranges to check in.
180
+
ingredient_db.clean_ranges_stack();
181
+
// after range cleanup
182
+
// println!("Ingredient Database: {:?}", ingredient_db);
183
+
184
+
// to get our first star, we check each ingredient in the second section against our initialized DB and increment fresh_count
185
+
let mut fresh_count = 0u64;
186
+
for test_ingredient in file_sections[1].lines() {
187
+
if ingredient_db.is_fresh(Ingredient {
188
+
id: test_ingredient
189
+
.parse()
190
+
.expect("Failed to parse ingredient ID"),
191
+
}) {
192
+
fresh_count += 1;
193
+
}
194
+
}
195
+
196
+
println!("Fresh Ingredients in Pantry: {}", fresh_count);
197
+
println!(
198
+
"Fresh Ingredients in Database: {}",
199
+
ingredient_db.count_fresh()
200
+
);
201
+
}
+11
day5/testinput.txt
+11
day5/testinput.txt
+7
day6/Cargo.lock
+7
day6/Cargo.lock
+6
day6/Cargo.toml
+6
day6/Cargo.toml
+5
day6/input.txt
+5
day6/input.txt
···
···
1
+
966 185 147 2533 13 79 2119 55 68 63 18 114 39 89 15 1871 869 3 66 4 92 544 387 8 2 555 986 579 42 682 5648 39 625 525 95 48 42 37 42 27 97 19 97 74 279 9373 77 46 412 4 6 5 564 7564 654 23 22 747 188 952 94 28 87 5 2 195 375 7 24 782 359 373 4829 2 34 69 8 25 5 12 84 2 22 2 81 88 83 7 73 6 31 52 85 56 94 72 78 835 5 4 47 967 115 819 92 93 88 7 25 8 83 31 396 752 7958 21 84 7 4 632 4 68 2 57 894 71 1739 22 55 826 9 8 38 74 61 424 943 14 94 55 922 69 41 2523 18 8 28 4 13 6 1 1246 54 411 4296 96 2 72 2822 7379 172 18 23 8 93 578 958 4722 1 8 4 9 987 76 3476 4 336 6 9645 299 53 852 1 111 75 52 61 9 92 93 943 68 31 8455 93 748 96 75 1 7 83 987 3 633 54 8 7111 54 818 64 25 19 4 17 85 88 5 25 6 9215 44 1 6 2 79 133 345 268 71 769 226 281 5217 1319 5 29 75 261 43 8 562 489 95 4 386 11 655 79 913 747 75 61 622 348 9 643 64 87 9466 919 59 93 695 2 49 18 217 94 34 64 9 2 18 7891 956 4 939 8 88 591 68 9 365 6 3 9536 73 384 762 546 789 429 35 29 538 585 828 3927 87 316 76 21 533 5925 917 24 91 22 468 7 4 4 1 27 51 4998 8512 482 773 17 44 25 434 79 58 71 3 1 75 713 968 6426 31 1 8 9 364 4273 51 619 7 62 2 387 83 8 774 3424 7 26 22 37 89 92 873 378 747 3776 32 965 39 9 91 97 26 295 749 13 9 892 41 871 94 5 1 715 3893 667 364 571 22 526 137 33 7922 9 988 91 39 7 698 83 99 22 872 2 1 468 469 45 8 98 6996 42 923 261 338 46 41 15 64 7 936 31 9 933 85 49 287 121 5 1 56 5 2914 2 43 831 22 65 862 869 14 6318 17 38 42 26 52 55 548 94 47 9 5 2 29 26 178 63 1 477 92 9557 98 841 8 66 142 83 57 74 6 2 346 242 495 92 6 42 376 6859 31 8 9142 35 262 714 71 51 551 82 8 8271 682 414 82 37 75 6 99 799 728 52 32 76 8 22 9 334 2 765 5462 73 4 31 835 7 22 58 51 569 272 181 8 72 64 976 649 41 945 7 14 934 11 7 8 38 556 649 56 25 7 817 9823 93 55 54 95 8487 77 6 221 9426 67 2 6 96 57 4 139 86 2 9 934 419 49 44 8 26 527 763 6556 826 58 49 3 8 91 51 562 9 834 589 2 99 8 7 66 918 13 667 48 53 7 8692 38 7955 996 73 76 91 67 951 14 83 293 97 68 11 718 81 69 54 79 93 81 186 92 8 644 616 7 53 22 6552 775 93 6 342 84 654 39 23 989 393 45 922 7699 34 683 8853 718 64 471 32 46 375 29 27 31 6985 526 716 85 1166 82 49 26 26 418 586 49 68 6 36 2286 723 85 5 5781 83 961 82 14 476 36 61 693 33 2 78 81 71 158 16 366 7 73 13 53 934 26 24 1 147 2 5 59 4 886 96 99 13 1971 14 35 896 7 582 1 461 72 42 2 23 1755 79 76 681 561 34 43 1 5 48 115 162 339 58 22 5 36 699 96 912 291 319 867 129 9 4136 89 24 44 29 3198 23 1733 635 8361 21 763 92 2 8 7 21 48 74 275 79 68 543 718 497 826 224 9 381 16 345 75 7134 95 4489 52 62 26 1 22 68 77 5637 38 5533 1 825 83 159 42 85 3 479 5 8 5339 4 719 945 49 81 9339 229 35 578 8683 4 3 47 1119 486 819 7 959 4956 7 282 32 15 257 372 967 2 125 258 63 168 593 14 49 6 8 847 131 3715 5 3 9274 94 78 66 795 56 46 7 29 138 6 786 38 23 3 99 64 981 537 246 44 3 1 252 2 7763 83 857 49 65 4 84 49 6 57 328 141 49 38 446 5 76 32 1796 56 16 22 9227 73 215 17 883 226 122 9 85 47 9316 254 359 99 32 2 59 5 8 278 51 57 3 22 855 958 45 11 7576 82 88 18 316 277 73 6 984 779 84 1 1 534 1823 5465 6 74 36 99 1 632 7 7693 54 69 4189 36 77 517 41 34 55 772 982 38 5191 27 298 48 235 44 2 35 6954 6 9 82 43 42 4 42 934 97 35 195 946 678 7 8 669 5764 4 72 91 22 5 123 9 4 6 4 795 568 73 78 79 71 1845 69 1 918 75 9 13 944 26 58 545 15 71 2 26 7 77 79 777
2
+
513 247 496 9374 65 12 5266 38 32 56 2485 825 73 19 328 1643 728 4 871 72 79 791 796 8 961 515 341 831 49 229 115 25 385 998 142 67 49 28 21 42 23 21 14 72 427 2237 97 11 441 37 12 48 131 9866 456 44 7287 649 138 251 78 81 18 6 27 392 981 38 44 918 514 646 7211 2 95 91 1 448 37 27 81 5 58 618 472 53 97 6 74 23 44 584 14 59 69 89 13 628 72 92 93 249 955 324 42 56 58 1 29 88 13 68 8491 36 7758 22 87 23 86 778 1 75 65 57 716 27 9135 75 21 915 7 568 77 87 73 154 989 58 257 414 631 75 77 7689 12 78 963 12 52 2 54 5312 952 399 5225 529 178 69 6495 632 919 6732 43 1 931 555 193 9596 57 8 67 1 248 16 1575 57 133 2 4976 435 1265 811 3 483 89 28 396 673 458 57 156 84 46 865 48 535 227 95 8 75 18 788 8 536 76 1 9752 96 816 68 15 59 839 51 95 37 19 647 34 6911 44 9 3 1 5 575 664 311 975 281 621 866 9624 9617 119 48 11 697 17 31 168 967 23 36 723 38 826 48 788 222 249 869 238 28 8 33 88 21 8312 79 751 22 119 43 62 36 7993 52 52 26 9 2 12 2392 252 73 489 88 31 628 285 22 198 3 86 226 5 979 241 222 392 422 58 37 599 779 988 7848 48 849 61 71 617 2139 5183 182 78 14 1312 572 594 739 55 333 15 1915 1754 677 793 74 91 938 681 17 49 54 47 41 8 552 74 6326 23 3 129 3 813 6485 22 47 22 22 6 239 13 535 297 2695 392 37 52 26 42 17 731 138 411 2614 733 6867 21 37 21 1 512 876 777 43 6 139 73 425 96 8 239 283 1659 511 527 776 575 546 299 46 922 9 978 68 32 36 382 656 26 32 665 19 63 8817 721 58 341 34 617 24 779 717 765 72 81 227 53 99 4512 59 38 698 793 995 688 547 17 9 54 595 8742 36 59 766 94 43 814 68 48 1539 361 382 62 68 34 66 35 13 61 9 8 813 346 18 735 74 155 718 44 4492 71 36 817 861 416 2 572 7 1 8 266 734 682 55 49 82 883 2638 19 76 1743 43 556 517 56 124 739 89 29 344 7699 763 351 41 16 245 715 491 974 21 849 73 94 44 3 579 588 36 5199 88 8 69 624 97 18 43 656 169 737 9667 1 79 31 123 235 27 137 57 76 958 22 8 8 86 315 954 88 12 7 181 2773 37 25 92 96 6712 58 2 628 9699 24 61 51 62 64 618 686 93 6 57 328 39 185 52 985 32 324 37 851 366 37 42 5 68 77 37 648 69 746 951 7 12 47 5 5479 633 74 529 796 41 7 1848 25 7915 245 3 49 17 13 441 67 66 458 75 59 684 161 65 18 16 47 61 696 37 719 9 662 671 5 53 82 3976 896 82 11 522 89 527 24 63 843 614 56 797 5198 6572 69 4613 545 373 921 89 55 844 43 22 47 7364 284 376 86 638 32 26 73 533 515 651 44 79 98 83 528 426 42 4 7855 97 766 45 17 669 5 41 112 978 3 32 61 38 95 54 879 218 79 52 16 236 22 61 49 8752 1 8 61 4 115 93 37 63 919 28 32 454 717 788 7 548 23 17 84 67 8775 39 76 475 252 51 99 21 37 39 127 972 531 84 94 6 91 455 98 697 513 287 714 685 3 7351 38 22 2265 927 9985 26 2461 38 589 98 824 24 13 9 9 69 48 85 859 31 85 831 461 862 512 969 48 663 573 357 18 7521 72 9965 91 766 63 37 22 119 56 5726 324 2672 6 858 8 697 36 1 1 864 84 6 2591 254 276 971 66 2739 824 886 81 378 2465 4 9 62 5738 138 343 25 56 9347 9444 1547 17 21 174 283 762 6323 263 14 2 333 484 17 94 93 337 212 542 9266 7 2 5118 47 56 22 8183 63 21 718 619 752 93 274 35 68 52 51 54 861 677 7266 27 158 69 925 22 6455 81 281 71 4955 63 24 66 4 32 743 238 71 82 845 4 87 79 1269 76 96 37 159 29 583 43 95 738 455 8 34 14 235 529 575 546 4141 85 29 83 3 895 59 255 53 76 288 4 91 64 7657 67 17 46 791 962 43 6 9316 3 48 163 25 886 1366 4577 79 35 19 16 7 343 52 2763 83 97 6568 71 91 826 98 77 363 753 879 59 966 58 255 12 758 167 69 753 1887 8 84 73 77 73 9 62 377 64 47 914 18 565 49 855 393 2429 92 499 65 92 9 944 566 3 882 82 894 113 35 64 333 94 495 16 866 862 771 8 98 372 94 36 734 72 86 11 87 87 2 36 674
3
+
72 656 21 499 94 23 4 82 85 79 2586 156 65 76 653 18 936 23 484 33 34 571 719 8 451 734 988 141 99 475 11 298 352 12 4717 95 72 11 62 22 193 17 57 3 748 7798 53 955 739 92 646 13 984 8421 336 8 8793 376 988 85 73 89 95 6 94 69 726 5918 92 326 962 139 431 819 23 55 61 4929 29 12 65 57 98 321 456 5 37 14 453 94 16 9874 489 12 78 86 17 998 62 49 65 182 558 584 889 44 91 95 57 655 41 67 4236 75 8533 31 58 48 47 825 1 75 84 78 92 73 76 62 92 72 5 1868 83 63 475 8 412 1 132 454 29 92 717 9144 44 93 273 47 39 95 81 855 883 622 953 774 877 791 5752 74 7432 6343 37 6 642 14 147 5315 52 43 435 61 1383 85 6585 96 97 39 82 254 7346 665 32 498 93 17 391 2588 864 311 183 38 92 163 35 939 182 28 71 584 25 587 773 673 647 96 4941 96 96 14 98 85 321 87 48 18 297 3738 12 121 918 7 86 12 9 17 7638 21 364 773 138 133 946 694 518 99 72 9 98 12 39 4394 46 6526 497 571 31 62 62 736 2695 953 352 63 19 5 36 71 6354 78 544 84 216 783 69 13 6425 68 82 23 1 413 12 4856 795 18 479 316 6 213 836 19 186 39 63 55 2 36 621 269 533 534 12 43 926 464 923 433 6 649 59 38 111 6668 1539 572 35 52 5151 231 518 499 21 879 37 598 38 58 711 69 59 3953 556 29 24 37 98 78 2 33 89 69 734 34 444 8 76 4566 91 2 14 87 79 973 49 679 556 5491 193 44 48 88 4 45 227 838 558 7582 625 6879 14 56 922 4 855 817 937 65 932 916 75 598 47 25 413 41 6741 172 32 648 785 97 21 243 95 28 224 19 633 99 195 2448 88 4 264 58 212 2247 293 33 727 61 84 83 988 159 47 13 69 388 69 12 3825 9 29 573 198 827 42 588 95 9 55 1653 552 791 35 215 61 3 489 86 55 4773 572 4593 24 3 17 13 62 6 7 2 7 694 571 819 868 87 377 75 65 94 16 59 385 9577 226 1 1673 5 42 1 178 8713 654 42 8228 76 75 7731 1 984 4846 95 64 784 56 556 695 91 3124 51 5893 172 146 34 85 227 268 9584 52 13 736 17 19 199 18 377 448 59 581 31 717 55 782 98 84 72 216 78 732 2311 32 24 6 816 556 54 165 11 47 637 45 485 19 524 97 935 37 16 927 12 8747 6 75 35 53 4836 92 9 37 2284 92 94 23 53 583 615 89 63 17 97 365 74 997 76 575 84 345 76 344 459 366 91 94 65 38 29 149 42 191 939 393 64 43 4 1824 17 1967 841 575 73 13 875 57 164 982 4 51 14 779 725 34 7 9372 43 97 125 323 2 84 459 67 363 219 19 251 62 233 2967 98 45 19 965 236 44 14 4864 5 588 53 313 5125 966 38 88 966 9248 72 619 556 132 484 377 75 849 76 71 42 4697 516 892 29 54 361 54 82 638 135 152 54 145 77 88 971 682 752 54 96 92 324 46 72 127 8 91 889 619 2 35 43 7 18 2 995 4849 46 16 33 622 81 5 739 2638 84 75 38 96 532 82 53 4 566 94 62 922 522 113 26 651 54 7 99 35 7412 7 75 468 45 34 25 84 17 343 33 486 254 19 26 77 893 73 21 884 69 434 484 775 333 433 65 58 6743 658 1623 22 1931 36 225 923 98 58 738 92 582 62 66 54 31 76 65 726 1 226 416 37 92 757 916 93 84 3197 29 94 11 481 7 663 453 886 538 5679 1898 35 19 255 5 893 24 2 97 184 75 7 7499 4883 86 16 4 1889 27 64 16 526 477 55 145 41 272 425 92 773 18 1366 6983 2612 85 27 188 448 8349 4274 147 39 1 923 653 62 51 59 4192 339 43 1315 76 26 7329 16 89 73 9125 31 15 942 7553 222 64 14 67 8 913 95 41 7224 392 5166 53 6643 16 2569 61 282 23 491 68 2187 38 439 723 5 39 8 322 47 37 58 23 256 92 547 19 14 87 234 6 849 33 55 987 658 883 57 65 289 957 788 299 2589 35 33 54 752 129 469 8645 666 87 98 2 34 7 339 1 93 58 158 549 37 24 5668 8 44 251 2464 123 723 4976 28 42 33 22 19 34 51 4497 32 42 669 6 998 999 56 99 5853 35 49 16 953 251 481 1 72 532 49 6562 976 65 38 92 71 98 52 16 291 91 52 599 95 564 74 477 8318 8664 689 654 2 76 61 317 111 1 747 22 356 253 57 75 347 87 49 6 471 619 649 518 42 155 73 33 63 71 331 587 45 28 5 27 811
4
+
1 914 15 398 72 47 1 68 58 1 2752 99 23 7 296 41 236 87 268 84 85 1 853 87 4677 522 218 286 16 9 89 882 653 9 7456 78 77 5 53 77 761 2 39 8 9 5214 89 724 312 28 161 87 862 478 3 9 7721 5 99 62 65 3 2 96 51 37 8 9772 85 738 88 153 58 854 692 81 74 2587 35 89 28 18 4 438 566 6 339 699 822 263 25 2252 874 68 19 47 47 73 25 93 9 69 813 437 784 4 13 79 33 163 79 46 9282 1 257 24 98 69 17 376 31 12 47 44 42 23 85 31 65 1 96 5258 24 3 323 4 7652 6 773 765 74 4 666 436 1 83 653 43 36 22 16 5 411 23 488 441 459 175 8252 53 8642 1244 42 88 574 7 23 9478 74 66 898 34 4879 49 938 59 1 519 5 938 8894 238 17 987 12 631 151 3571 649 759 63 68 7 3 22 227 286 8 43 117 92 9 437 62 443 71 4345 79 32 12 11 78 388 96 27 97 161 7241 33 36 621 67 37 72 8 4 7229 63 619 63 5 29 85 94 939 66 8 2 49 92 3 2988 32 8515 442 411 27 8 78 3 4114 819 648 5 96 7 4 12 465 75 612 478 33 3558 5 588 2936 13 39 15 46 671 57 758 136 58 63 571 5 499 157 94 81 438 73 6 4 36 148 962 591 19 55 11 59 98 631 73 3 76 83 19 83 539 9139 769 48 39 4757 229 8166 637 87 795 96 14 95 89 19 2 57 4589 264 23 33 81 788 772 6 92 2 76 233 51 157 73 6 147 224 9 613 82 65 64 95 893 4 9453 136 66 58 23 4 99 1 55 826 2596 635 6437 12 711 669 8 399 32 51 6 198 5 32 8 28 11 518 26 549 396 78 826 817 7 47 547 39 14 96 41 184 92 383 3315 35 1 274 17 484 9114 772 51 541 14 4 89 64 416 46 41 66 663 1 72 3777 4 14 941 596 419 54 897 52 14 46 4444 165 499 383 19 6 5 528 4 83 342 214 8194 79 3 65 17 1 4 4 733 15 711 966 199 393 3 248 15 4 59 96 5 821 1394 582 6 6171 6 69 49 7 7544 798 14 7727 8 29 823 9 525 8213 52 88 39 51 383 843 12 7832 5 6292 727 528 86 1 848 337 1966 7 45 585 45 19 811 79 899 8845 35 96 85 796 21 943 37 14 56 337 21 89 9438 18 76 9 17 7 7516 83 58 48 62 83 896 253 917 96 9887 68 7 699 63 5 9 22 48 4 59 36 77 95 42 38 29 52 64 714 937 58 58 79 75 145 88 379 31 867 22 9 66 49 6 886 41 26 49 1 15 872 74 734 691 988 17 26 379 5711 4 7934 799 848 98 58 75 5 71 351 2 313 43 7999 523 9 5 8372 13 97 632 787 1 8 141 7 994 844 13 666 92 91 2183 36 63 6 984 868 63 14 2472 6 733 49 289 7473 643 7 52 556 1935 52 666 44 368 922 255 36 478 86 528 3 935 11 6 7 8 837 85 37 9275 784 6 823 642 86 6 531 248 841 916 8 8 283 7 78 747 7 39 154 758 39 85 96 9 7 8 555 7217 61 35 8 84 16 4 376 3535 28 23 41 14 32 89 92 6 6 5 78 147 967 782 56 499 65 7 19 95 74 5 51 31 59 15 4 38 25 216 91 86 86 72 1 39 287 55 39 59 9 35 971 585 125 21 8 11 9232 947 1 51 45 71 6 264 5 15 576 93 697 45 9 5 33 4 92 728 9 472 234 44 56 751 733 31 77 215 29 5 81 164 6 943 826 385 415 368 8679 3 21 764 2 72 2 8 265 24 82 45 63 4347 9 2 7 7364 19 6 98 989 64 65 934 1 44 9 3 511 29 476 9632 2662 87 3 83 13 6262 3284 8 32 5 131 61 2 78 28 5921 8 5 7172 26 382 437 68 68 6 1263 95 32 362 2536 79 95 7 15 5 567 84 79 9836 643 4998 73 4171 14 8679 839 7 3 4 85 7951 99 861 343 74 66 5 86 7 17 44 98 228 42 87 84 32 22 55 7 325 39 73 336 272 292 45 1 523 273 35 224 7432 53 19 54 214 7 414 7159 569 29 41 8 51 8 966 4 26 78 664 716 52 858 5638 6 44 7329 4517 695 377 7971 75 7 88 94 76 89 87 167 43 6 484 5 445 467 22 77 9934 2 65 82 7 448 9 8 9 343 61 2631 914 944 1231 4 1 26 18 4 757 17 9 8 3 42 39 896 4142 8491 481 789 6 56 35 466 682 47 896 13 246 847 839 99 718 61 63 6 524 6 588 643 66 1 55 67 7 45 944 659 21 25 3 29 5
5
+
* * + + + + + + * * + * + + * + * + * * + + * + + + * * + * + + * * + * * * + * * + * * * + * * * * + * * + * * + + * * * + * + + * + + * * + * + * + * * + + * * + * * * * * * + + * + + * + * * + * + * * * * * * * + * * * + + * + + + * * * + * + * + * + * + * + + * * * + + * * + * * * + * * * * * * + + * * + + * * + + + + + * + + + + * + * + + + + * * + + + + * * + * * * + * * + * * + + + + + + * + + * * * + + * + * + * * + * * + + + + * + + + * + + + + + * + + + + * * + + * * + + + * * + * * + + * + * * * * * + + * * + + + * + * + * * * + + + + + * * * * + + * + + + + * * + * * * * * * + * + * * * + + * * * + * + + + + * + + * + * + + * * + + + * * * * + + * * + * + + * * * + * * + + + * * * + + * + * + + * + * * * * + + * * * * * * + * + + + * * * + + * + + + * + * * * + + * + * * + + * + * + + * * * * * * * * + * + + + * * * * * * + + + * * + * + * + + * + + + * * + + * * * + * + + * * * + + * * + + * * + * * + + + * * + * * + + * + * * + * + * + + + + * * * + * * + + * * + + * * * + * + * * * + * + + + * * + + * + * * + * * * * + * * * + + + * + * + + * + + + * + + + + * + * * + + + * + * + * + + * * + + * + + + * * * * + * + * * * * + * + * * * * + * + * * * + + + + * + * * + * + + * * * + * * * + + * + * + + * * + + + + * + + * + + + * + * * * * * * + * + + * + * + + * * + + + * + + * + + + * + + + + + + * + + + * + * + + * * + * + + * * + * + * * + + * + + + + + + * * + + * * * + + + + * * * + + * * + * * + * * * + * * * * * + * + + * * + * + * + * + + * * + * + * * + * + + + * * + + + + * * * + + + + * * * + + * + + + + * * + * * + + + + + + + * + + + + * * + + * * + * * + * + + + + * * + + + * * * * * + * * + + + + * + + * * * + + * * + * * * * + + * + + + + * + + + * + + + * + + * + * + + * * * * * * * + * + + + * + * * * * * + * + * * * + + + + * + * + * + * + + + + * + * * + + * + + + + + + + + + + + + * * + + + * + + * * * + + * * + + * * * + * * + + + + * * * * * * + * * + * + * + + + * * * * * + * + * * * + * + * + * * + * + * * * * * * * * + + + + +
+75
day6/src/main.rs
+75
day6/src/main.rs
···
···
1
+
use std::fmt::Debug;
2
+
use std::fs;
3
+
4
+
mod parser;
5
+
// what if signed but did, punch card then?
6
+
//
7
+
enum MathProblem {
8
+
Sum(Vec<u64>),
9
+
Mult(Vec<u64>),
10
+
}
11
+
12
+
impl Debug for MathProblem {
13
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
14
+
match self {
15
+
MathProblem::Sum(nums) => write!(f, "Sum({:?})", nums),
16
+
MathProblem::Mult(nums) => write!(f, "Mult({:?})", nums),
17
+
}
18
+
}
19
+
}
20
+
21
+
impl MathProblem {
22
+
fn new(mut nums: Vec<String>) -> MathProblem {
23
+
println!("nums: {:?}", nums);
24
+
//let mut mynums = nums.clone();
25
+
let operator: char = nums
26
+
.pop()
27
+
.expect("Unable to get final char from vector.")
28
+
.chars()
29
+
.next()
30
+
.expect("Operator could not be parsed.");
31
+
let values: Vec<u64> = nums.iter().map(|num| num.parse().unwrap()).collect();
32
+
match operator {
33
+
'+' => MathProblem::Sum(values),
34
+
'*' => MathProblem::Mult(values),
35
+
_ => panic!("Invalid operator"),
36
+
}
37
+
}
38
+
39
+
fn solve(&self) -> u64 {
40
+
match self {
41
+
MathProblem::Sum(nums) => nums.iter().sum(),
42
+
MathProblem::Mult(nums) => nums.iter().product(),
43
+
}
44
+
}
45
+
}
46
+
47
+
fn main() {
48
+
let input = fs::read_to_string("input.txt").expect("Unable to read input file");
49
+
50
+
// Go line by line through input and split each line by whitespace
51
+
// create a Vector of Vectors that store each column
52
+
/* let mut columns: Vec<Vec<&str>> = Vec::new();
53
+
54
+
for line in input.lines() {
55
+
for (index, word) in line.split_whitespace().enumerate() {
56
+
if index < columns.len() {
57
+
columns[index].push(word);
58
+
} else {
59
+
columns.push(vec![word]);
60
+
}
61
+
}
62
+
} */
63
+
64
+
let problems = parser::parse_columns(&input);
65
+
66
+
let mut solutions: Vec<u64> = Vec::new();
67
+
for problem in problems {
68
+
// let math_problem = MathProblem::new(&mut problem);
69
+
let solution = problem.solve();
70
+
solutions.push(solution);
71
+
println!("{:?} = {}", problem, solution);
72
+
}
73
+
74
+
println!("Grand total of {:?}", solutions.iter().sum::<u64>());
75
+
}
+76
day6/src/parser.rs
+76
day6/src/parser.rs
···
···
1
+
use crate::MathProblem;
2
+
3
+
// how to read cephalopod grid:
4
+
//
5
+
// let Vec<Equations>
6
+
// convert string -> lines, convert lines to Vec(chars)
7
+
// let number = Vec<char>
8
+
// for column in line.len -> 0 ; for row in lines.len :
9
+
// if grid[row][col].parse() :
10
+
//
11
+
12
+
fn normalize_rows(char_grid: Vec<Vec<char>>) -> Vec<Vec<char>> {
13
+
let max_row = char_grid.iter().map(|row| row.len()).max().unwrap_or(0);
14
+
char_grid
15
+
.into_iter()
16
+
.map(|mut row| {
17
+
row.resize(max_row, ' ');
18
+
row
19
+
})
20
+
.collect()
21
+
}
22
+
23
+
pub fn parse_columns(input: &str) -> Vec<MathProblem> {
24
+
let mut problems = Vec::new();
25
+
// parse input into 2d array of chars
26
+
let char_grid: Vec<Vec<char>> = input.lines().map(|line| line.chars().collect()).collect();
27
+
let char_grid = normalize_rows(char_grid);
28
+
29
+
println!("char_grid: {:?}", char_grid);
30
+
31
+
let mut cur_problem = Vec::<String>::new();
32
+
// Flag for whether we should skip this col
33
+
let mut skip_col = false;
34
+
35
+
for col in 0..char_grid[0].len() {
36
+
if skip_col {
37
+
skip_col = false;
38
+
continue;
39
+
}
40
+
let rcol = char_grid[0].len() - col - 1;
41
+
let mut num_chars = Vec::<char>::new();
42
+
let mut found_operator = false;
43
+
let p: String;
44
+
45
+
for row in 0..char_grid.len() {
46
+
if char_grid[row][rcol] == ' ' {
47
+
continue;
48
+
}
49
+
num_chars.push(char_grid[row][rcol]);
50
+
println!("num_chars: {:?}", num_chars);
51
+
if char_grid[row][rcol] == '*' || char_grid[row][rcol] == '+' {
52
+
found_operator = true;
53
+
}
54
+
}
55
+
if !found_operator {
56
+
// Surely there is a better way to do this repeated bit
57
+
p = num_chars.iter().collect::<String>(); // }
58
+
let parsed_problem = p.trim().to_string(); //}
59
+
cur_problem.push(parsed_problem); // }
60
+
} else {
61
+
let operator = num_chars.pop().unwrap();
62
+
63
+
p = num_chars.iter().collect::<String>(); // }
64
+
let parsed_problem = p.trim().to_string(); //}
65
+
cur_problem.push(parsed_problem); // }
66
+
67
+
cur_problem.push(operator.to_string());
68
+
println!("cur_problem: {:?}", cur_problem);
69
+
let math_problem = MathProblem::new(cur_problem);
70
+
problems.push(math_problem);
71
+
cur_problem = Vec::new();
72
+
skip_col = true;
73
+
}
74
+
}
75
+
problems
76
+
}
+7
day7/Cargo.lock
+7
day7/Cargo.lock
+6
day7/Cargo.toml
+6
day7/Cargo.toml
+142
day7/input.txt
+142
day7/input.txt
···
···
1
+
......................................................................S......................................................................
2
+
.............................................................................................................................................
3
+
......................................................................^......................................................................
4
+
.............................................................................................................................................
5
+
.....................................................................^.^.....................................................................
6
+
.............................................................................................................................................
7
+
....................................................................^...^....................................................................
8
+
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9
+
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10
+
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11
+
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12
+
.............................................................................................................................................
13
+
.................................................................^.....^.^.^.................................................................
14
+
.............................................................................................................................................
15
+
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16
+
.............................................................................................................................................
17
+
...............................................................^.^.^.^.^.....^...............................................................
18
+
.............................................................................................................................................
19
+
..............................................................^.^.^.^.....^.^.^..............................................................
20
+
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21
+
.............................................................^.^...^...^.^...^.^.............................................................
22
+
.............................................................................................................................................
23
+
............................................................^.^.^.^.^.^...^.^.^.^............................................................
24
+
.............................................................................................................................................
25
+
...........................................................^...^.^.......^.^...^.^...........................................................
26
+
.............................................................................................................................................
27
+
..........................................................^.^...^.^.^.^.^...^.^...^..........................................................
28
+
.............................................................................................................................................
29
+
.........................................................^.^.^...^.^.^.^.^.^.^.^...^.........................................................
30
+
.............................................................................................................................................
31
+
........................................................^.^.^.........^.^.^...^.....^........................................................
32
+
.............................................................................................................................................
33
+
.......................................................^.^.^...^...^.....^...^.^...^.^.......................................................
34
+
.............................................................................................................................................
35
+
......................................................^.^.......^.......^.......^.....^......................................................
36
+
.............................................................................................................................................
37
+
.....................................................^.^.^.....^.^.^.....^.^.^.^.^...^.^.....................................................
38
+
.............................................................................................................................................
39
+
....................................................^.^...^...^.^.^.^.^...^.....^.......^....................................................
40
+
.............................................................................................................................................
41
+
...................................................^.^.^.^.^.^...^...^.^.^.^.^.^.....^...^...................................................
42
+
.............................................................................................................................................
43
+
..................................................^.^.^.^...^.^...^...^.^.....^.^...^.....^..................................................
44
+
.............................................................................................................................................
45
+
.................................................^.^.......^.^.....^...^.^...^.^...^.^...^.^.................................................
46
+
.............................................................................................................................................
47
+
................................................^...^.^.^.^.....^.^.^.^.^.^.^.....^.........^................................................
48
+
.............................................................................................................................................
49
+
...............................................^.......^.^...^.^...^.^.^.^.^...^.^...^.^.^.^.^...............................................
50
+
.............................................................................................................................................
51
+
..............................................^...^.^...^...^.^.......^.^...^.^.^.^.^.....^.^.^..............................................
52
+
.............................................................................................................................................
53
+
.............................................^...^.^.^...^.....^...^...^.^...^...^.^.......^.^.^.............................................
54
+
.............................................................................................................................................
55
+
............................................^.^.^...^.^...^...^.^.....^.^.^.^.^.^.^.^.^.^.^.^.^.^............................................
56
+
.............................................................................................................................................
57
+
...........................................^.^.^...^.^.....^.^.^...^.......^.^.^.^.^.....^...^.^.^...........................................
58
+
.............................................................................................................................................
59
+
..........................................^.^.^.^.^.^.^...^.^.^.^.^.^.^...^.^.^.^.^.^.....^.^.^.^.^..........................................
60
+
.............................................................................................................................................
61
+
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62
+
.............................................................................................................................................
63
+
........................................^.^...^.......^.^.....^.^.^.^.^.^.^.^.^...^.^.^.^.^.^...^.^.^........................................
64
+
.............................................................................................................................................
65
+
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66
+
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67
+
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68
+
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69
+
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70
+
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71
+
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72
+
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73
+
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74
+
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75
+
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76
+
.............................................................................................................................................
77
+
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78
+
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79
+
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80
+
.............................................................................................................................................
81
+
...............................^.^.^.^.^.^.....^.^.^.^...^...........^.....^.....^.^.......^.^.^.....^.^.^...^...............................
82
+
.............................................................................................................................................
83
+
..............................^.^.^.^.^.^.^...^.^.^.....^.^.....^...^...^.^.^.^...^.^...^.^...^.......^...^.^.^..............................
84
+
.............................................................................................................................................
85
+
.............................^...^.^.....^.^.^.....^.^...^.^...^.^...^...^.^...^.^...^...^...^.^.^.....^.....^.^.............................
86
+
.............................................................................................................................................
87
+
............................^.^.....^.^.^.....^.^...^.^...^.....^.^...^...^.^.^...^...^.^.^...^.^.^.^.^.^...^...^............................
88
+
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89
+
...........................^...^.^.^...^.^.^.......^.^.^...^.^.^.^.^...^...^.^.^...^.^.^.^.^.^.^.^.^.^...^...^...^...........................
90
+
.............................................................................................................................................
91
+
..........................^.^.^.^.^...^.^.^.....^.^...^.....^...^...^...^.^.^.....^...^.........^.^.^...^.^.^.^.^.^..........................
92
+
.............................................................................................................................................
93
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.........................^...^.^.......^...^.......^...^.....^.^.^...^.....^...^...^...^.^...^.^.^.^...^.....^...^.^.........................
94
+
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95
+
........................^...^...^.^...^.^...^.^.^.^...^...^.^.^...^...^.^.^...^.....^...^.^.^.^.^...^.^.^.^.^...^...^........................
96
+
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97
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.......................^...^.^...^...^.^.^.^...^.^...^.....^.^.^.^.^...^.^.^.^.^.........^.^.^.^.^.^.^.^...^.^...^...^.......................
98
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......................^...^.^.^.^.^.^.^.^.^.^...^.^...^...^.^...^...^.......^...^.....^.^.^...^.^.^.^.^.^.^.^.^.^.^.^.^......................
100
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.....................^...^.....^.^...^.^.^...^.^.^.^.^.^.^.^...^...^.^.^.^...........^.^.......^.....^.......^...^.^.^.^.....................
102
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....................^.^.^...^.^...^.^.....^.^.^.........^...^.^...^.^.....^.^.^.....^.......^.^.^...^.^.^.^.......^.^.^.^....................
104
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...................^.^.^.^.....^.^.^...^.^.^...^.^.^.^.^.^.^.^.^.......^.^.^.^.^.^...^.^.^.^...^.^.^...^.^...^...^.^.^.^.^...................
106
+
.............................................................................................................................................
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..................^.....^.^...^.^.^.^.^.^.^...^.^.........^.^.^.^.^...^.^...^.......^.^.^.^.^.....^.^.^.^.^.^.^.^.^...^.^.^..................
108
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109
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.................^...^.^.^.^.^.^.^...^.^...^.^.^...^.^...^.^.^...^.^...^...^.^...^.^...^.^...^...^.....^.^.....^.....^...^.^.................
110
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................^.....^.......^.^.^.^.^...^.^...^.^.^.^.^.....^.^...^.^.^.......^.^.^.^.^.^.^.^.^.^.^.^...^.^.^.^.^...^.^.^.^................
112
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113
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...............^.....^.^...^.^.^.^.^...^.........^...^.^.^.^...^.^.^.^.^...^...^.^.^.^...^.^.^.^.^.^.^...^.^.....^.^.^.^.^.^.^...............
114
+
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115
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..............^.^.^...^...^.^.^.^.^.^.^.^.^.^.^.^.^.^.....^.^.....^.^.^.^.^...^.^.^.^.^.^.^.^...^.^.^.^.^.^.^.^...^...^...^.^.^..............
116
+
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117
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.............^.^.^.^.....^.^.^...^.....^.^.^.......^...^.^.^.^.^.^.^.^.^.^.^.^.^.^.....^.^.^...^...^.^.......^...^...^.^.^...^.^.............
118
+
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............^.^.^.....^.^.^.^.^...^.^.^...^.^...^.^.^.^.^.....^.^...^.^.^.^...^.......^...^...^.^.^.^.^...^.^.^.^.^.^.^.^.^...^.^............
120
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121
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...........^.^...^.^...^.^.^...^.^.^.^.^.^.....^...^.^.....^...^...^.^.^.^...^.^.^.^.^...^.....^...^.^...^.....^.....^...^...^.^.^...........
122
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123
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..........^.^.^.^.^.......^.....^...^...^...^...^...^.....^.^.^.^.^.....^.^...^.^.^.^.^.....^.^...^.^.^.^.....^.^.^.^.^.^...^...^.^..........
124
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125
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.........^.^.^...^.^.^.^.^.^.^.^.^.........^.^...^...^.....^.^.^.^.^.^.^.^.^.......^.^.^.^.^.^...^...^.^...^.^.^.^.^.^...^.^.^...^.^.........
126
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........^.^.....^.^.^.....^.^.^...^.^...^.^.^.....^...^.^.^...^.^.^.^.^.^.....^.....^.^.^.^...^.^...^.^.....^.....^...^.^.....^.^...^........
128
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.......^...^.^.......^.^...^.^...^.^...^.....^.^.^.^.^.^.^.^...^.^.^...^...^.^.^.^.^...^...^...^.^.^...^.^...^.^.^.^.^.^.^.^.^...^.^.^.......
130
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......^.......^.....^...^...^.^.....^.^...^.....^.^.^.^.^.^...^...^...^.^...^...^.........^.^...^.......^.^.^.^...^.....^.^.^.^.....^.^......
132
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.....^.^...^.^.^.....^...^.^...^.^...^.^.^.^.^.^.^.^.^.....^...^.......^.....^.^.^...^...^.^.^...^.^.^.......^.^.^.^...^...^.^.^.^.^.^.^.....
134
+
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....^.^.^.....^.^.^.^.^.^.^.....^.^.^.^.....^...^.........^.^.........^.^.^.^.^.^.^...^.^.^.^...^.^.^...^.^.^.....^...^.......^.^.^.^...^....
136
+
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...^.^.....^.^...^.^.^.^.^.^.^.....^.^.......^...^...^...^.^...^...^.^.^.^.^.^.^.^...^.^.^.^.^...^.^.^.^.....^.^.^.^.^.^.^.^.^.^.^...^...^...
138
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..^.^.^.^...^...^.......^...^.^...^.^.....^...^.^.^...^...^.....^...^.....^.^.^.^.^...^.^.^.^.^.^.^.^...^.^.^.^.^.^.^.^...^.^.....^.^...^.^..
140
+
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.^.^.^.....^.........^.^.......^.^.^.^...^.^.^.^.........^.^.^.......^.^.......^.^.^.^.^.^.^...^...^...^.^.^...^.^.^.....^.^.^...^.^.^.^.^.^.
142
+
.............................................................................................................................................
+16
day7/smallinput.txt
+16
day7/smallinput.txt
···
···
1
+
.......S.......
2
+
...............
3
+
.......^.......
4
+
...............
5
+
......^.^......
6
+
...............
7
+
.....^.^.^.....
8
+
...............
9
+
....^.^...^....
10
+
...............
11
+
...^.^...^.^...
12
+
...............
13
+
..^...^.....^..
14
+
...............
15
+
.^.^.^.^.^...^.
16
+
...............
+173
day7/src/main.rs
+173
day7/src/main.rs
···
···
1
+
use std::collections::VecDeque;
2
+
use std::fmt::Debug;
3
+
use std::fs;
4
+
5
+
struct TachyonManifold {
6
+
data: Vec<Vec<char>>,
7
+
height: usize,
8
+
width: usize,
9
+
}
10
+
11
+
impl TachyonManifold {
12
+
fn new(input: String) -> Self {
13
+
let data: Vec<Vec<char>> = input.lines().map(|line| line.chars().collect()).collect();
14
+
let height = data.len();
15
+
let width = data[0].len();
16
+
Self {
17
+
data,
18
+
height,
19
+
width,
20
+
}
21
+
}
22
+
23
+
fn propagate_beam(&mut self, row: usize) -> u32 {
24
+
let mut split_count = 0u32;
25
+
let row_data = self.data[row].clone();
26
+
27
+
// THIS ANNOYINGLY CONTAINS AN IMMUTABLE BORROW for self.data[row]
28
+
// SO IT BREAKS ALL MY MUTABLE REFERENCES.
29
+
// THIS IS WHY THERE IS ALL THE CLONE()ING
30
+
for (index, c) in row_data.iter().enumerate() {
31
+
match c {
32
+
'S' | '|' => {
33
+
if self.data[row + 1][index] == '.' {
34
+
self.data[row + 1][index] = '|'
35
+
}
36
+
}
37
+
'^' => {
38
+
if self.data[row.saturating_sub(1)][index] == '|' {
39
+
self.data[row][index + 1] = '|';
40
+
self.data[row][index.saturating_sub(1)] = '|';
41
+
split_count += 1;
42
+
}
43
+
}
44
+
_ => continue,
45
+
}
46
+
}
47
+
48
+
// ANNOYINGLY HAVE TO RE-CLONE DATA BC CANT FIGURE OUT HOW TO EDIT IN PLACE
49
+
let row_data = self.data[row].clone();
50
+
51
+
for (index, c) in row_data.iter().enumerate() {
52
+
match c {
53
+
'|' => {
54
+
if self.data[row + 1][index] == '.' {
55
+
self.data[row + 1][index] = '|'
56
+
}
57
+
}
58
+
_ => continue,
59
+
}
60
+
}
61
+
split_count
62
+
}
63
+
}
64
+
65
+
// NEW PLAN OKAY SO BASICALLY WE CAN PUSH EACH ROW/COL TO A STACK AND SEE IF IT HAS A LINE OF SIGHT TO THE BOTTOM, IF IT ENCOUNTERS A ^ WE PUSH TWO MORE, IF IT REACHES THE BOTTOM, WE POP
66
+
67
+
impl TachyonManifold {
68
+
fn ez_quantum(&mut self, row: usize) -> u64 {
69
+
let mut path_stack = Vec::<QuantumSplit>::new();
70
+
let mut timelines = Vec::<Vec<QuantumSplit>>::new();
71
+
let mut cur_timeline = Vec::<QuantumSplit>::new();
72
+
// let mut success_paths = 0;
73
+
// initialize two paths from starting node
74
+
let start_col = self.data[row]
75
+
.iter()
76
+
.position(|c| *c == '^')
77
+
.expect("No starting split found");
78
+
println!("Start column: {}", start_col);
79
+
path_stack.push(QuantumSplit::Left(row, start_col.saturating_sub(1)));
80
+
path_stack.push(QuantumSplit::Right(row, start_col.saturating_add(1)));
81
+
82
+
while let Some(cur_path) = path_stack.pop() {
83
+
//println!("Path stack: {:?}", path_stack);
84
+
// Save the path we take
85
+
match cur_path {
86
+
QuantumSplit::Left(cur_row, cur_col) | QuantumSplit::Right(cur_row, cur_col) => {
87
+
for row_index in cur_row..self.height {
88
+
cur_timeline.push(cur_path.clone());
89
+
if row_index == self.height - 1 {
90
+
// save the full path
91
+
timelines.push(cur_timeline.clone());
92
+
cur_timeline.clear();
93
+
// success_paths += 1;
94
+
// println!("Found {} paths", success_paths);
95
+
// println!("Cur_path = {:?}", cur_path);
96
+
// println!("Stack = {:?}", path_stack);
97
+
// println!("Found {} paths", success_paths);
98
+
} else if self.data[row_index][cur_col] == '^' {
99
+
path_stack
100
+
.push(QuantumSplit::Left(row_index, cur_col.saturating_sub(1)));
101
+
path_stack
102
+
.push(QuantumSplit::Right(row_index, cur_col.saturating_add(1)));
103
+
self.data[row_index][cur_col] = 'x';
104
+
break;
105
+
} else if self.data[row_index][cur_col] == 'x' {
106
+
break;
107
+
} else {
108
+
self.data[row_index][cur_col] = '|';
109
+
}
110
+
}
111
+
println!("Data: {:?}", self);
112
+
}
113
+
}
114
+
}
115
+
116
+
println!("Explored map: {:?}", self);
117
+
//println!("Timelines: {:?}", timelines);
118
+
119
+
timelines.len() as u64
120
+
}
121
+
}
122
+
123
+
// Quantum propagation thoughts
124
+
// looks like a tree structure
125
+
// every time we find a split, could push a new Tachyon Manifold onto the stack
126
+
// --- Wait okay its one beam
127
+
// so really we just need to store a stack of L/R decisions that represent
128
+
// a map of outcomes
129
+
// problem is... how do we distinguish whether tachyons path was unique?
130
+
// save every path taken as a a string & convert to a set?
131
+
// or are they just guaranteed unique structurally
132
+
133
+
// Okay so quantum split will represent each time we encounter a ^ traversing the file
134
+
#[derive(Debug, Clone)]
135
+
enum QuantumSplit {
136
+
Left(usize, usize),
137
+
Right(usize, usize),
138
+
}
139
+
140
+
impl Debug for TachyonManifold {
141
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
142
+
writeln!(
143
+
f,
144
+
"TachyonManifold of size {}, {} {{",
145
+
self.width, self.height
146
+
)?;
147
+
for row in &self.data {
148
+
for &cell in row {
149
+
write!(f, "{}", cell)?;
150
+
}
151
+
writeln!(f)?;
152
+
}
153
+
writeln!(f, "}}")?;
154
+
Ok(())
155
+
}
156
+
}
157
+
158
+
fn main() {
159
+
let mut manifold = TachyonManifold::new(fs::read_to_string("smallinput.txt").unwrap());
160
+
161
+
// let mut splits = 0u32;
162
+
// for row in 0..manifold.height - 1 {
163
+
// splits += manifold.propagate_beam(row);
164
+
// // println!("{:?}", manifold);
165
+
// }
166
+
167
+
// Weird observation: for the small example provided
168
+
// answer for total number of paths == the number of beams
169
+
let beam_count = manifold.ez_quantum(2);
170
+
171
+
// println!("Beam split {} times.", splits);
172
+
println!("Total possible paths: {}", beam_count);
173
+
}
+160
day8/Cargo.lock
+160
day8/Cargo.lock
···
···
1
+
# This file is automatically @generated by Cargo.
2
+
# It is not intended for manual editing.
3
+
version = 4
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+
5
+
[[package]]
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name = "ahash"
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12
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"once_cell",
13
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"version_check",
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[[package]]
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+
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28
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+8
day8/Cargo.toml
+8
day8/Cargo.toml
+1000
day8/input.txt
+1000
day8/input.txt
···
···
1
+
34638,6460,34327
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+20
day8/smallinput.txt
+20
day8/smallinput.txt
···
···
1
+
162,817,812
2
+
57,618,57
3
+
906,360,560
4
+
592,479,940
5
+
352,342,300
6
+
466,668,158
7
+
542,29,236
8
+
431,825,988
9
+
739,650,466
10
+
52,470,668
11
+
216,146,977
12
+
819,987,18
13
+
117,168,530
14
+
805,96,715
15
+
346,949,466
16
+
970,615,88
17
+
941,993,340
18
+
862,61,35
19
+
984,92,344
20
+
425,690,689
+23
day8/src/circuit.rs
+23
day8/src/circuit.rs
···
···
1
+
use crate::Point;
2
+
use std::fmt::Debug;
3
+
4
+
#[derive(Clone, Hash, PartialEq, Eq)]
5
+
pub struct Circuit {
6
+
pub nodes: Vec<Point>,
7
+
pub size: usize,
8
+
}
9
+
10
+
impl Circuit {
11
+
pub fn contains_point(&self, point: &Point) -> bool {
12
+
self.nodes.contains(point)
13
+
}
14
+
}
15
+
impl Debug for Circuit {
16
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
17
+
writeln!(f, "Circuit {{ ");
18
+
for node in &self.nodes {
19
+
writeln!(f, "{:?}, ", node)?;
20
+
}
21
+
writeln!(f, "size: {} }} ", self.size)
22
+
}
23
+
}
+164
day8/src/main.rs
+164
day8/src/main.rs
···
···
1
+
use itertools::Itertools;
2
+
use memoize::memoize;
3
+
use std::{collections::HashMap, fmt::Debug};
4
+
mod circuit;
5
+
use circuit::Circuit;
6
+
7
+
#[derive(Debug, Clone, Hash, PartialEq, Eq, Copy, PartialOrd)]
8
+
struct Point {
9
+
x: u64,
10
+
y: u64,
11
+
z: u64,
12
+
}
13
+
14
+
impl Point {
15
+
fn new(x: u64, y: u64, z: u64) -> Self {
16
+
Point { x, y, z }
17
+
}
18
+
19
+
fn distance_to(&self, other: &Point) -> u32 {
20
+
distance(*self, *other)
21
+
}
22
+
23
+
fn closest_neighbours(&self, points: &[Point]) -> Vec<u32> {
24
+
points
25
+
.iter()
26
+
.map(|p| {
27
+
if p != self {
28
+
self.distance_to(p)
29
+
} else {
30
+
u32::MAX
31
+
}
32
+
})
33
+
.collect()
34
+
}
35
+
36
+
fn find_closest(&self, points: &[Point]) -> Option<Point> {
37
+
points
38
+
.iter()
39
+
.min_by_key(|p| {
40
+
if **p == *self {
41
+
u32::MAX
42
+
} else {
43
+
self.distance_to(p)
44
+
}
45
+
})
46
+
.copied()
47
+
}
48
+
}
49
+
50
+
#[memoize]
51
+
fn distance(a: Point, b: Point) -> u32 {
52
+
((a.x as i64 - b.x as i64).pow(2)
53
+
+ (a.y as i64 - b.y as i64).pow(2)
54
+
+ (a.z as i64 - b.z as i64).pow(2))
55
+
.isqrt() as u32
56
+
}
57
+
58
+
fn main() {
59
+
let input_file = std::fs::read_to_string("smallinput.txt").expect("Failed to read input file");
60
+
let points = input_file
61
+
.lines()
62
+
.map(|line| {
63
+
let parts: Vec<&str> = line.split(',').collect();
64
+
Point::new(
65
+
parts[0].parse().expect("Failed to parse x coordinate"),
66
+
parts[1].parse().expect("Failed to parse y coordinate"),
67
+
parts[2].parse().expect("Failed to parse z coordinate"),
68
+
)
69
+
})
70
+
.collect::<Vec<Point>>();
71
+
72
+
// let mut circuits = Vec::new();
73
+
let mut jmap: HashMap<Point, usize> = HashMap::new();
74
+
for (id, p) in points.iter().enumerate() {
75
+
jmap.insert(*p, id);
76
+
}
77
+
78
+
let point_pairs = points
79
+
.iter()
80
+
.enumerate()
81
+
.flat_map(|(i, &p1)| {
82
+
points.iter().enumerate().filter_map(move |(j, &p2)| {
83
+
if i != j {
84
+
let dist = p1.distance_to(&p2);
85
+
Some((p1, p2))
86
+
} else {
87
+
None
88
+
}
89
+
})
90
+
})
91
+
.collect::<Vec<(Point, Point)>>();
92
+
93
+
// deduplicate connections
94
+
let mut closest_connections: Vec<(Point, Point)> = point_pairs
95
+
.iter()
96
+
.unique_by(|&&(p1, p2)| if p1 < p2 { (p1, p2) } else { (p2, p1) })
97
+
.copied()
98
+
.collect();
99
+
100
+
// sort connections by distance
101
+
closest_connections.sort_by(|a, b| distance(a.0, a.1).cmp(&distance(b.0, b.1)));
102
+
// println!("Closest connections: {:?}", closest_connections);
103
+
104
+
let mut n_connections = 10;
105
+
106
+
// okay so basically my idea is we track how many times each size appears
107
+
// will also save us the annoying calculation at the end in theory
108
+
// if both circuits have sizes,
109
+
let mut circuit_sizes: HashMap<usize, usize> = HashMap::new();
110
+
111
+
for (index, point_pair) in closest_connections.iter().enumerate() {
112
+
if index >= n_connections {
113
+
break;
114
+
}
115
+
116
+
// initialize circuit sizes for both points if they don't exist
117
+
if circuit_sizes.contains_key(&jmap[&point_pair.0]) {
118
+
circuit_sizes.insert(jmap[&point_pair.0], 1);
119
+
}
120
+
if circuit_sizes.contains_key(&jmap[&point_pair.1]) {
121
+
circuit_sizes.insert(jmap[&point_pair.1], 1);
122
+
}
123
+
124
+
if jmap[&point_pair.0] == jmap[&point_pair.1] {
125
+
println!(
126
+
"Skipping connection between {:?} and {:?} as they are already connected in circuit {}",
127
+
point_pair.0, point_pair.1, jmap[&point_pair.0]
128
+
);
129
+
n_connections += 1;
130
+
continue;
131
+
}
132
+
let size_0: usize = *circuit_sizes.get(&jmap[&point_pair.0]).unwrap_or(&0);
133
+
let size_1: usize = *circuit_sizes.get(&jmap[&point_pair.1]).unwrap_or(&0);
134
+
135
+
println!(
136
+
"Connecting {:?} from circuit {} and {:?} in circuit {}",
137
+
point_pair.1, jmap[&point_pair.1], point_pair.0, jmap[&point_pair.0]
138
+
);
139
+
140
+
if size_0 > size_1 {
141
+
jmap.insert(point_pair.0, jmap[&point_pair.1]);
142
+
circuit_sizes.insert(size_0, circuit_sizes.get(&size_0).unwrap_or(&0) + 1);
143
+
} else {
144
+
jmap.insert(point_pair.1, jmap[&point_pair.0]);
145
+
circuit_sizes.insert(size_1, circuit_sizes.get(&size_1).unwrap_or(&0) + 1);
146
+
}
147
+
148
+
println!("Circuit sizes: {:?}", circuit_sizes);
149
+
}
150
+
151
+
let mut circuit_groups = jmap
152
+
.values()
153
+
.fold(std::collections::HashMap::new(), |mut acc, &val| {
154
+
*acc.entry(val).or_insert(0) += 1;
155
+
acc
156
+
})
157
+
.into_values()
158
+
.sorted()
159
+
.collect::<Vec<usize>>();
160
+
161
+
circuit_groups.reverse();
162
+
println!("Junction map: {:?}", jmap);
163
+
println!("Circuit groups: {:?}", circuit_groups);
164
+
}
+6
day8/toyinput.txt
+6
day8/toyinput.txt
+202
day9/Cargo.lock
+202
day9/Cargo.lock
···
···
1
+
# This file is automatically @generated by Cargo.
2
+
# It is not intended for manual editing.
3
+
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4
+
5
+
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51
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84
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"proc-macro2",
85
+
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86
+
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87
+
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89
+
[[package]]
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+
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+
95
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100
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101
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103
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104
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dependencies = [
105
+
"clap",
106
+
"itertools",
107
+
]
108
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109
+
[[package]]
110
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111
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114
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149
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156
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157
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158
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160
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162
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163
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166
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174
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175
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176
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177
+
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178
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179
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180
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183
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189
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200
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202
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+8
day9/Cargo.toml
+8
day9/Cargo.toml
+496
day9/input.txt
+496
day9/input.txt
···
···
1
+
97819,50153
2
+
97819,51361
3
+
97695,51361
4
+
97695,52560
5
+
97478,52560
6
+
97478,53816
7
+
98081,53816
8
+
98081,54975
9
+
97418,54975
10
+
97418,56200
11
+
97473,56200
12
+
97473,57459
13
+
97673,57459
14
+
97673,58694
15
+
97628,58694
16
+
97628,59810
17
+
96976,59810
18
+
96976,60944
19
+
96485,60944
20
+
96485,62061
21
+
95974,62061
22
+
95974,63248
23
+
95748,63248
24
+
95748,64662
25
+
96214,64662
26
+
96214,65764
27
+
95642,65764
28
+
95642,66755
29
+
94801,66755
30
+
94801,67896
31
+
94390,67896
32
+
94390,69110
33
+
94141,69110
34
+
94141,70168
35
+
93526,70168
36
+
93526,71446
37
+
93369,71446
38
+
93369,72267
39
+
92298,72267
40
+
92298,73226
41
+
91531,73226
42
+
91531,74355
43
+
91073,74355
44
+
91073,75528
45
+
90666,75528
46
+
90666,76633
47
+
90131,76633
48
+
90131,77691
49
+
89515,77691
50
+
89515,78771
51
+
88919,78771
52
+
88919,79538
53
+
87908,79538
54
+
87908,80478
55
+
87135,80478
56
+
87135,81550
57
+
86514,81550
58
+
86514,81966
59
+
85154,81966
60
+
85154,83369
61
+
84879,83369
62
+
84879,84065
63
+
83848,84065
64
+
83848,84550
65
+
82633,84550
66
+
82633,85553
67
+
81914,85553
68
+
81914,86608
69
+
81224,86608
70
+
81224,87400
71
+
80297,87400
72
+
80297,87882
73
+
79129,87882
74
+
79129,89069
75
+
78496,89069
76
+
78496,89747
77
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77476,89747
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79
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76042,89792
80
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89
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70940,93038
90
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70940,93570
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95
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96
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97
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98
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99
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101
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103
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63128,96445
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105
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61879,96494
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107
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60734,96939
108
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60734,97073
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59516,97073
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58345,97437
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52263,98179
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51066,98179
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51066,98009
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49846,98009
126
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48641,97442
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47441,97442
130
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131
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46225,97554
132
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46225,97865
133
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44977,97865
134
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44977,97399
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39078,96388
144
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145
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37832,96382
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37832,96415
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149
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35632,95283
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35632,95832
151
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34169,95832
152
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153
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33315,94609
154
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33315,94140
155
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32203,94140
156
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31115,93620
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31115,93612
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161
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28827,92816
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28827,92854
163
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27439,92854
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27439,92120
165
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26444,92120
166
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26444,91350
167
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25479,91350
168
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25479,91029
169
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24243,91029
170
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24243,90150
171
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23354,90150
172
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23354,88965
173
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22693,88965
174
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22693,88616
175
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21452,88616
176
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21452,87622
177
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20684,87622
178
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20684,87088
179
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19560,87088
180
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19560,86108
181
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18800,86108
182
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18800,85166
183
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18022,85166
184
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18022,84526
185
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16968,84526
186
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16968,83798
187
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15983,83798
188
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15983,83275
189
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14768,83275
190
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14768,82119
191
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14219,82119
192
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14219,81229
193
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13385,81229
194
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13385,80353
195
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12529,80353
196
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12529,78959
197
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12338,78959
198
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12338,78258
199
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11257,78258
200
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11257,77432
201
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10316,77432
202
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10316,76306
203
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9804,76306
204
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9804,75257
205
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9186,75257
206
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9186,74070
207
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8808,74070
208
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8808,73346
209
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7617,73346
210
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7617,72112
211
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7336,72112
212
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7336,71130
213
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6571,71130
214
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6571,69839
215
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6453,69839
216
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6453,68884
217
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5601,68884
218
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5601,67730
219
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5195,67730
220
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5195,66371
221
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5358,66371
222
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5358,65433
223
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4369,65433
224
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4369,64085
225
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4595,64085
226
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4595,62951
227
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4183,62951
228
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4183,61942
229
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3257,61942
230
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3257,60761
231
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2939,60761
232
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2939,59474
233
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3133,59474
234
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3133,58235
235
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3186,58235
236
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3186,57057
237
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2924,57057
238
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2924,55964
239
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1943,55964
240
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1943,54727
241
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1983,54727
242
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1983,53526
243
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1643,53526
244
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1643,52258
245
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2454,52258
246
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2454,51063
247
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1936,51063
248
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1936,50143
249
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94800,50143
250
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94800,48628
251
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1967,48628
252
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1967,47420
253
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2174,47420
254
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2174,46235
255
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2572,46235
256
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2572,45009
257
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2439,45009
258
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2439,43789
259
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2455,43789
260
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2455,42617
261
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2817,42617
262
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2817,41320
263
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2452,41320
264
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2452,40171
265
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2941,40171
266
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2941,39071
267
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3579,39071
268
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3579,37926
269
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3978,37926
270
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3978,36593
271
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3706,36593
272
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3706,35458
273
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4168,35458
274
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4168,34184
275
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4208,34184
276
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4208,33283
277
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5303,33283
278
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5303,32050
279
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5479,32050
280
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5479,31124
281
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6400,31124
282
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6400,29843
283
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6498,29843
284
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6498,28596
285
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6717,28596
286
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6717,27511
287
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7282,27511
288
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7282,26340
289
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7694,26340
290
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7694,25288
291
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8327,25288
292
+
8327,24719
293
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9728,24719
294
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9728,23535
295
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10122,23535
296
+
10122,22481
297
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10731,22481
298
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10731,21219
299
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11068,21219
300
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11068,20260
301
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11832,20260
302
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11832,19402
303
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12719,19402
304
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12719,18681
305
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13753,18681
306
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13753,17399
307
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14147,17399
308
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14147,16842
309
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15341,16842
310
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15341,15813
311
+
16031,15813
312
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16031,15227
313
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17157,15227
314
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17157,14012
315
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17695,14012
316
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17695,13399
317
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18782,13399
318
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18782,12438
319
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19572,12438
320
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19572,12015
321
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20791,12015
322
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20791,11392
323
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21840,11392
324
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21840,10247
325
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22519,10247
326
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22519,10010
327
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23828,10010
328
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23828,9084
329
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24678,9084
330
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24678,8491
331
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25744,8491
332
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25744,7863
333
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26788,7863
334
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26788,6987
335
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27707,6987
336
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27707,6573
337
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28870,6573
338
+
28870,5960
339
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29935,5960
340
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29935,5408
341
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31033,5408
342
+
31033,4964
343
+
32177,4964
344
+
32177,4548
345
+
33332,4548
346
+
33332,4435
347
+
34588,4435
348
+
34588,4188
349
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35787,4188
350
+
35787,4063
351
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37014,4063
352
+
37014,3490
353
+
38116,3490
354
+
38116,3175
355
+
39292,3175
356
+
39292,3040
357
+
40506,3040
358
+
40506,2347
359
+
41616,2347
360
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41616,2950
361
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42946,2950
362
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42946,2088
363
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44053,2088
364
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44053,2542
365
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45327,2542
366
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45327,2293
367
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46520,2293
368
+
46520,2372
369
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47737,2372
370
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47737,1604
371
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48928,1604
372
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48928,1823
373
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50154,1823
374
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50154,2178
375
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51365,2178
376
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51365,1738
377
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52602,1738
378
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52602,1788
379
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53826,1788
380
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53826,2273
381
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55007,2273
382
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55007,2068
383
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56260,2068
384
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56260,2614
385
+
57414,2614
386
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57414,3231
387
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58537,3231
388
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58537,2920
389
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59832,2920
390
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59832,3681
391
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60904,3681
392
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60904,3946
393
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62081,3946
394
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62081,4131
395
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63283,4131
396
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63283,4652
397
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64387,4652
398
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64387,4844
399
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65596,4844
400
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65596,5340
401
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66703,5340
402
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66703,5487
403
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67945,5487
404
+
67945,5728
405
+
69166,5728
406
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69166,6794
407
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70019,6794
408
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70019,7116
409
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71206,7116
410
+
71206,7226
411
+
72517,7226
412
+
72517,7707
413
+
73651,7707
414
+
73651,8446
415
+
74640,8446
416
+
74640,9118
417
+
75664,9118
418
+
75664,10000
419
+
76545,10000
420
+
76545,10362
421
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77777,10362
422
+
77777,11195
423
+
78686,11195
424
+
78686,12344
425
+
79340,12344
426
+
79340,12818
427
+
80515,12818
428
+
80515,13383
429
+
81638,13383
430
+
81638,14591
431
+
82196,14591
432
+
82196,14977
433
+
83505,14977
434
+
83505,16181
435
+
84036,16181
436
+
84036,16826
437
+
85122,16826
438
+
85122,17980
439
+
85670,17980
440
+
85670,19070
441
+
86263,19070
442
+
86263,19578
443
+
87553,19578
444
+
87553,20767
445
+
88016,20767
446
+
88016,21839
447
+
88608,21839
448
+
88608,22815
449
+
89324,22815
450
+
89324,23773
451
+
90072,23773
452
+
90072,24865
453
+
90613,24865
454
+
90613,25784
455
+
91439,25784
456
+
91439,26819
457
+
92080,26819
458
+
92080,27995
459
+
92456,27995
460
+
92456,28855
461
+
93456,28855
462
+
93456,30075
463
+
93733,30075
464
+
93733,31143
465
+
94332,31143
466
+
94332,32193
467
+
94995,32193
468
+
94995,33560
469
+
94829,33560
470
+
94829,34660
471
+
95352,34660
472
+
95352,35816
473
+
95717,35816
474
+
95717,36836
475
+
96569,36836
476
+
96569,38156
477
+
96354,38156
478
+
96354,39394
479
+
96376,39394
480
+
96376,40441
481
+
97281,40441
482
+
97281,41617
483
+
97650,41617
484
+
97650,42900
485
+
97353,42900
486
+
97353,44047
487
+
97963,44047
488
+
97963,45312
489
+
97609,45312
490
+
97609,46476
491
+
98312,46476
492
+
98312,47743
493
+
97494,47743
494
+
97494,48929
495
+
98347,48929
496
+
98347,50153
+55
day9/src/floortiles.rs
+55
day9/src/floortiles.rs
···
···
1
+
use itertools::Itertools;
2
+
use std::fmt::Display;
3
+
4
+
#[derive(Debug)]
5
+
pub struct FloorTiles {
6
+
pub red_tiles: Vec<(usize, usize)>,
7
+
pub rows: usize,
8
+
pub cols: usize,
9
+
}
10
+
11
+
impl FloorTiles {
12
+
pub fn load(filename: &str) -> Self {
13
+
println!("trying to read {}", filename);
14
+
let contents = std::fs::read_to_string(filename).expect("unable to read file as string");
15
+
let red_tiles: Vec<(usize, usize)> = contents
16
+
.lines()
17
+
.map(|line| {
18
+
line.split(',')
19
+
.map(|num| num.parse().expect("Could not parse {num}"))
20
+
.collect_tuple()
21
+
.expect("Unable to parse tuple")
22
+
})
23
+
.collect();
24
+
FloorTiles {
25
+
rows: red_tiles.iter().fold(0, |a, b| a.max(b.0)) + 1,
26
+
cols: red_tiles.iter().fold(0, |a, b| a.max(b.1)) + 1,
27
+
red_tiles,
28
+
}
29
+
}
30
+
31
+
fn build_grid(&self) -> Vec<Vec<char>> {
32
+
let mut grid = vec![vec!['.'; self.rows + 1]; self.cols + 1];
33
+
for &(row, col) in &self.red_tiles {
34
+
if row < self.rows && col < self.cols {
35
+
grid[col][row] = '#';
36
+
}
37
+
}
38
+
grid
39
+
}
40
+
41
+
fn is_inside(&self, tile: (usize, usize)) -> bool {
42
+
tile.0 < self.rows && tile.1 < self.cols
43
+
}
44
+
}
45
+
46
+
impl Display for FloorTiles {
47
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
48
+
let grid = self.build_grid();
49
+
writeln!(f)?;
50
+
for row in grid {
51
+
writeln!(f, "{}", row.iter().collect::<String>())?;
52
+
}
53
+
Ok(())
54
+
}
55
+
}
+46
day9/src/main.rs
+46
day9/src/main.rs
···
···
1
+
use clap::Parser;
2
+
mod floortiles;
3
+
mod rectangle;
4
+
5
+
#[derive(Parser, Debug)]
6
+
struct Args {
7
+
#[clap(short, long)]
8
+
file: String,
9
+
#[clap(short, long)]
10
+
debug: bool,
11
+
}
12
+
13
+
fn main() {
14
+
let args = Args::parse();
15
+
16
+
let tiles = floortiles::FloorTiles::load(&args.file);
17
+
18
+
let mut max_area = 0;
19
+
for tilea in 0..tiles.red_tiles.len() {
20
+
for tileb in tilea..tiles.red_tiles.len() {
21
+
if tiles.red_tiles[tilea].0 == tiles.red_tiles[tileb].0
22
+
|| tiles.red_tiles[tilea].1 == tiles.red_tiles[tileb].1
23
+
{
24
+
continue;
25
+
}
26
+
let rect = rectangle::Rectangle::new(tiles.red_tiles[tilea], tiles.red_tiles[tileb]);
27
+
if args.debug {
28
+
println!(
29
+
"Rectangle from {:?} to {:?} has area: {}",
30
+
rect.corn_a,
31
+
rect.corn_b,
32
+
rect.area()
33
+
);
34
+
}
35
+
36
+
if rect.area() > max_area {
37
+
max_area = rect.area();
38
+
}
39
+
}
40
+
}
41
+
42
+
if args.debug {
43
+
println!("Red Tile Locations: {}", tiles);
44
+
}
45
+
println!("Maximum Area: {}", max_area);
46
+
}
+32
day9/src/rectangle.rs
+32
day9/src/rectangle.rs
···
···
1
+
pub struct Rectangle {
2
+
pub corn_a: (usize, usize),
3
+
pub corn_b: (usize, usize),
4
+
pub width: usize,
5
+
pub height: usize,
6
+
}
7
+
8
+
impl Rectangle {
9
+
pub fn new(corn_a: (usize, usize), corn_b: (usize, usize)) -> Self {
10
+
let width = corn_a
11
+
.0
12
+
.max(corn_b.0)
13
+
.saturating_sub(corn_a.0.min(corn_b.0))
14
+
+ 1;
15
+
let height = corn_a
16
+
.1
17
+
.max(corn_b.1)
18
+
.saturating_sub(corn_a.1.min(corn_b.1))
19
+
+ 1;
20
+
21
+
Self {
22
+
corn_a,
23
+
corn_b,
24
+
width,
25
+
height,
26
+
}
27
+
}
28
+
29
+
pub fn area(&self) -> usize {
30
+
self.width * self.height
31
+
}
32
+
}