commit 45ef31326125ef13f18beac424ac9ca92e018133
parent 3d86d1483b60da34abec48937872b1b09f264530
Author: Samir Parikh <noreply@samirparikh.com>
Date: Thu, 22 Dec 2022 15:59:07 +0000
solve day04
Diffstat:
3 files changed, 1032 insertions(+), 0 deletions(-)
diff --git a/day04/day04.pl b/day04/day04.pl
@@ -0,0 +1,25 @@
+#!/usr/local/bin/perl
+# day 2022-04
+
+use strict;
+use warnings;
+use v5.32;
+
+@ARGV = "input" unless @ARGV;
+chomp( my $input = do { local $/; <> } );
+
+my $part1 = 0;
+my $part2 = 0;
+
+foreach my $pair ( split /\n/, $input ) {
+ my ( $x1, $y1, $x2, $y2 ) =
+ $pair =~ m/(\d+)-(\d+),(\d+)-(\d+)/;
+ $part1++ if ( ( $x1 >= $x2 && $y1 <= $y2 ) ||
+ ( $x2 >= $x1 && $y2 <= $y1 ) );
+ $part2++ if ( ( $y2 >= $x1 && $y2 <= $y1 ) ||
+ ( $x2 >= $x1 && $x2 <= $y1 ) ||
+ ( $x1 >= $x2 && $y1 <= $y2 ) );
+}
+
+say "part 1: ", $part1;
+say "part 2: ", $part2;
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+
diff --git a/day04/test b/day04/test
@@ -0,0 +1,6 @@
+2-4,6-8
+2-3,4-5
+5-7,7-9
+2-8,3-7
+6-6,4-6
+2-6,4-8
