2022 AoC Day 4 – Camp Cleanup

This is a solution to Advent of Code 2022 day 4, written in Raku.

https://adventofcode.com/2022/day/4

Part One

In how many assignment pairs does one range fully contain the other?

say [+] '4-input.txt'.IO.lines.map({
    my Int ($a, $b, $x, $y) = .comb(/\d+/)>>.Int;
    my @a = $a..$b;
    my @b = $x..$y;
    @a (<=) @b || @b (<=) @a;
});

Part Two

In how many assignment pairs do the ranges overlap?

say [+] '4-input.txt'.IO.lines.map({
    my Int ($a, $b, $x, $y) = .comb(/\d+/)>>.Int;
    my @a = $a..$b;
    my @b = $x..$y;
    ?(@a (&) @b)
});

raku