21 lines
413 B
Elixir
21 lines
413 B
Elixir
defmodule Day6Part2 do
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def run do
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File.stream!("input")
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|> Stream.chunk_by(&(&1 == "\n"))
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|> Stream.map(fn group ->
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{count, frequencies} =
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group
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|> Enum.join()
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|> String.to_charlist()
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|> Enum.frequencies()
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|> Map.pop(?\n)
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Enum.count(frequencies, fn {_, v} -> v == count end)
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end)
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|> Enum.sum()
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|> IO.puts()
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end
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end
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Day6Part2.run()
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