29 lines
602 B
Elixir
29 lines
602 B
Elixir
defmodule Solution do
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def solve(input, chunk) do
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(String.split(input, "", trim: true)
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|> Enum.chunk_every(chunk, 1, :discard)
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|> Enum.map(fn window ->
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Enum.reduce(window, %{}, fn char, acc ->
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Map.put(acc, char, Map.get(acc, char, 0) + 1)
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end)
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end)
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|> Enum.find_index(fn letter_counts ->
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Enum.all?(letter_counts, fn {_key, value} ->
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value == 1
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end)
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end)) + chunk
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end
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def main do
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input = File.read!("input")
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solve(input, 4)
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|> IO.inspect()
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solve(input, 14)
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|> IO.inspect()
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end
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end
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Solution.main()
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