commit 4249474ab0f86ca295228551263fdc254e741f03 · hauleth.dev/advent-of-code

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2022/day01.livemd

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       # Day 01

     

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       ```elixir

     

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       Mix.install([

     

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         {:kino_aoc, git: "https://github.com/ljgago/kino_aoc"}

     

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       ])

     

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       ```

     

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       ## Setup

     

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       <!-- livebook:{"attrs":{"day":"1","session_secret":"ADVENT_OF_CODE_SESSION","variable":"puzzle_input","year":"2022"},"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->

     

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       ```elixir

     

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       {:ok, puzzle_input} =

     

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         KinoAOC.download_puzzle("2022", "1", System.fetch_env!("LB_ADVENT_OF_CODE_SESSION"))

     

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       ```

     

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       ```elixir

     

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       elves =

     

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         puzzle_input

     

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         |> String.split("\n")

     

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         |> Enum.chunk_while(

     

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           [],

     

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           fn

     

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             "", acc -> {:cont, Enum.reverse(acc), []}

     

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             val, acc -> {:cont, [String.to_integer(val) | acc]}

     

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           end,

     

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           fn

     

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             [] -> {:cont, []}

     

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             acc -> {:cont, Enum.reverse(acc), []}

     

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           end

     

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         )

     

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       ```

     

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       ## Task 1

     

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       ```elixir

     

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       elves

     

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       |> Enum.map(&Enum.sum/1)

     

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       |> Enum.max()

     

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       ```

     

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       ## Task 2

     

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       ```elixir

     

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       elves

     

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       |> Enum.map(&Enum.sum/1)

     

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       |> Enum.sort(:desc)

     

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       |> Enum.take(3)

     

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       |> Enum.sum()

     

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       ```