20 lines
417 B
Elixir
20 lines
417 B
Elixir
defmodule Day5Part1 do
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def run do
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File.stream!("input")
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|> Stream.map(&String.trim/1)
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|> Stream.map(&seat_id/1)
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|> Enum.max()
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|> IO.puts()
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end
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def char_to_bit(c) when c in 'FL', do: <<0::1>>
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def char_to_bit(c) when c in 'BR', do: <<1::1>>
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def seat_id(boarding_pass) do
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<<id::10>> = for <<char <- boarding_pass>>, into: <<>>, do: char_to_bit(char)
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id
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end
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end
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Day5Part1.run()
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