Day 4
Mix.install([
{:kino, "~> 0.7.0"}
])
Input
input = Kino.Input.textarea("Please paste your input file:")
Helpers
Part 1
input
|> Kino.Input.read()
|> String.splitter("\n")
|> Enum.filter(fn line ->
[first, second] = String.split(line, ",")
[e1_start, e1_finish] = String.split(first, "-") |> Enum.map(&String.to_integer/1)
[e2_start, e2_finish] = String.split(second, "-") |> Enum.map(&String.to_integer/1)
(e1_start >= e2_start && e1_finish <= e2_finish) ||
(e2_start >= e1_start && e2_finish <= e1_finish)
end)
|> Enum.count()
Part 2
input
|> Kino.Input.read()
|> String.splitter("\n")
|> Enum.filter(fn line ->
[first, second] = String.split(line, ",")
[e1_start, e1_finish] = String.split(first, "-") |> Enum.map(&String.to_integer/1)
[e2_start, e2_finish] = String.split(second, "-") |> Enum.map(&String.to_integer/1)
(e1_start <= e2_start && e1_finish >= e2_start) ||
(e2_start <= e1_start && e2_finish >= e1_start)
end)
|> Enum.count()
