Day 12: JSAbacusFramework.io

elixir/day_12_jsabacusframeworkio.livemd

Eli Chen

@elichen

aoc2015

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Day 12: JSAbacusFramework.io

Mix.install([
  {:jason, "~> 1.2"}
])

Section

defmodule P1 do
  def sum_recursive(map) when is_map(map) do
    map
    |> Map.values()
    |> Enum.map(&amp;sum_recursive/1)
    |> Enum.sum()
  end

  def sum_recursive(list) when is_list(list) do
    list
    |> Enum.map(&amp;sum_recursive/1)
    |> Enum.sum()
  end

  def sum_recursive(number) when is_number(number), do: number
  def sum_recursive(_), do: 0
end

json_string =
  "/Users/eli/Desktop/input.txt"
  |> File.read!()

{:ok, result} = Jason.decode(json_string)
P1.sum_recursive(result)

defmodule P2 do
  def sum_recursive(map) when is_map(map) do
    if Map.values(map) |> Enum.any?(fn v -> v == "red" end) do
      0
    else
      map
      |> Map.values()
      |> Enum.map(&amp;sum_recursive/1)
      |> Enum.sum()
    end
  end

  def sum_recursive(list) when is_list(list) do
    list
    |> Enum.map(&amp;sum_recursive/1)
    |> Enum.sum()
  end

  def sum_recursive(number) when is_number(number), do: number
  def sum_recursive(_), do: 0
end

json_string =
  "/Users/eli/Desktop/input.txt"
  |> File.read!()

{:ok, result} = Jason.decode(json_string)
P2.sum_recursive(result)

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