44 lines
622 B
Markdown
44 lines
622 B
Markdown
# Day01
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```elixir
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Mix.install([
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{:kino, "~> 0.14.2"},
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{:decimal, "~> 2.2"}
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])
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```
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## Section
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```elixir
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input = Kino.Input.textarea("Input")
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```
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```elixir
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input =
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input
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|> Kino.Input.read
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|> String.split("\n")
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|> Enum.map(fn l -> String.split(l, " ") end)
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|> List.foldl([[],[]], fn [x, y], [xa, ya] ->
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[[String.to_integer(x)| xa], [String.to_integer(y)| ya]]
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end)
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```
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```elixir
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input
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|> Enum.map(&Enum.sort/1)
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|> Enum.zip
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|> Enum.map(fn {x,y} -> abs(x - y) end)
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|> Enum.sum
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```
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```elixir
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[x, y] = input
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f = Enum.frequencies(y)
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x
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|> Enum.map(fn xx -> xx * (f[xx] || 0) end)
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|> Enum.sum
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```
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