Advent of Code: Day 01

Mix.install([
  {:kino, "~> 0.7.0"}
])

Helpers

defmodule Helpers do
  def create_file_input() do
    Kino.Input.text("Input File")
  end

  def read_file_contents(input) do
    filename = Kino.Input.read(input)
    file_path = "/Users/charlie/github.com/charlieroth/advent-of-code/2022/#{filename}"

    case File.read(file_path) do
      {:ok, contents} -> contents
      {:error, _} -> raise("Failed to read file contents")
    end
  end
end

Day 01: Calorie Counting

example_input = ~S"""
1000
2000
3000

4000

5000
6000

7000
8000
9000

10000
"""

file_input = Helpers.create_file_input()

Part 01

Helpers.read_file_contents(file_input)
|> String.split("\n\n")
|> Enum.map(fn x -> String.split(x, "\n") end)
|> Enum.map(&Enum.filter(&1, fn it -> it !== "" end))
|> Enum.map(&Enum.map(&1, fn it -> String.to_integer(it) end))
|> Enum.map(&Enum.sum/1)
|> Enum.sort(&(&1 >= &2))
|> hd()

Part 02

Helpers.read_file_contents(file_input)
|> String.split("\n\n")
|> Enum.map(&String.split(&1, "\n"))
|> Enum.map(&Enum.filter(&1, fn it -> it !== "" end))
|> Enum.map(&Enum.map(&1, fn it -> String.to_integer(it) end))
|> Enum.map(&Enum.sum/1)
|> Enum.sort(&(&1 >= &2))
|> Enum.slice(0..2)
|> Enum.sum()