Advent of Code 2020, Day 5

aoc_20_5_alt.ex

def run_1_bin, do: input!() |> String.split("\n") |> Enum.map(fn d -> d |> String.replace("F", "0") |> String.replace("B", "1") |> String.replace("R", "1") |> String.replace("L", "0") |> String.to_integer(2) end) |> Enum.max()
def run_2_bin, do: input!() |> String.split("\n") |> Enum.map(fn d -> d |> String.replace("F", "0") |> String.replace("B", "1") |> String.replace("R", "1") |> String.replace("L", "0") |> String.to_integer(2) end) |> Enum.sort() |> (fn [_ | tail] = total -> total |> Enum.zip(tail) |> Enum.filter(fn {a, b} -> b - a != 1 end) |> (fn [{_, b}] -> b - 1 end).() end).() end