🎄 Year 2022 🔔 Day 01

Parse input

filename = "#{__DIR__}/../../../inputs/2022/day01.txt"

parsed_input_stream =
  File.stream!(filename)
  |> Enum.map(&String.trim/1)
  |> Enum.chunk_by(fn e -> e == "" end)
  |> Enum.take_every(2)
  |> Enum.map(fn meals -> Enum.map(meals, &String.to_integer/1) end)

Shared code

Part One

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

Part two

parsed_input_stream
|> Enum.map(&Enum.sum/1)
|> Enum.sort(:desc)
|> Enum.take(3)
|> Enum.sum()