chay.dev
+36
lib/day06.ex
+36
lib/day06.ex
···
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defmodule Aoc2025.Day06 do
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@moduledoc false
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use Aoc2025.Template
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def get_day, do: 6
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def get_example,
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do: """
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123 328 51 64
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45 64 387 23
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6 98 215 314
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* + * +
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"""
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def parse_input(input) do
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input
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|> String.trim()
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|> String.split("\n")
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|> Stream.map(&String.split/1)
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end
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def solve_part_1(input) do
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input
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|> Enum.reverse()
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|> Enum.zip_with(&Function.identity/1)
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|> Enum.map(fn [op_str | [first | rest]] ->
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op = op_str_to_func(op_str)
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Enum.reduce(rest, String.to_integer(first), fn num, acc -> op.(String.to_integer(num), acc) end)
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end)
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|> Enum.sum()
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end
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def op_str_to_func("*"), do: &Kernel.*/2
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def op_str_to_func("+"), do: &Kernel.+/2
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end