X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=2022%2F10.pl;h=0dcf15f87c1d13ea6350b300118f09517a539408;hb=ec283da1f9eb5574ace9f827dc811be8a6c48e47;hp=913e078d860582ba3385330017e9e296b7ab438d;hpb=992ea7b162b0ce64553e4c10118d12163b13c696;p=aoc.git

diff --git a/2022/10.pl b/2022/10.pl
index 913e078..0dcf15f 100755
--- a/2022/10.pl
+++ b/2022/10.pl
@@ -8,14 +8,10 @@ my @stacks;
 
 while (<>) {
 	last if /^ \d/;
-	my $i = 1;
-	my $st = 0;
-	$stacks[$st] //= [];
-	while ($i < length) {
-		my $c = substr($_, $i, 1);
-		unshift @{ $stacks[$st] }, $c if $c =~ /[A-Z]/;
-		$i += 4;
-		$st++;
+	my $i = 0;
+        for (/.(.). ?/g) {
+		unshift @{ $stacks[$i] }, $_ if /[A-Z]/;
+		$i++;
 	}
 }