From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Tue, 2 Dec 2025 06:03:41 +0000 (+0100)
Subject: Shorter solution for part 2
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=18c9417edeaa6482730ebce18e1ba47dfb89cb8a;p=aoc.git

Shorter solution for part 2
---

diff --git a/2025/04.pl b/2025/04.pl
index 36c4b97..4ede8a8 100755
--- a/2025/04.pl
+++ b/2025/04.pl
@@ -4,8 +4,6 @@ use v5.42;
 
 my $sum;
 for my ($x, $y) (<> =~ /\d+/g) {
-	for ($x .. $y) {
-		$sum += $_ if /^(\d+)\1+$/;
-	}
+	$sum += $_ for grep /^(\d+)\1+$/, $x .. $y;
 }
 say $sum;