modamo.xyz
+1
-1
day01/part1.ts
+1
-1
day01/part1.ts
+31
day01/part2.ts
+31
day01/part2.ts
···
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import { readFileSync } from "fs";
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const instructions = readFileSync("./input.txt", "utf8")
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.split(/\n/)
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.map((line) => ({
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direction: line[0],
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distance: Number(line.slice(1))
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}));
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let dialPosition = 50;
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let dialAtZero = 0;
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for (const { direction, distance } of instructions) {
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const click = direction === "L" ? -1 : 1;
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for (let i = 0; i < distance; i++) {
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dialPosition += click;
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if (dialPosition === -1) {
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dialPosition = 99;
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} else if (dialPosition === 100) {
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dialPosition = 0;
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}
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if (dialPosition === 0) {
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dialAtZero++;
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}
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}
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}
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console.log(dialAtZero);