Flipping bits game: Difference between revisions

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@@ Line 2,255: / Line 2,255: @@
     $string ~= sprintf "%2s ", $_ for sort keys %hash{'1'};
     $string ~= "\n";
-    for sort keys %hash -> $key {
+    for %hash.keys.sort: +* -> $key {
         $string ~= sprintf "%2s ", $key;
         $string ~= sprintf "%2s ", %hash{$key}{$_} for sort keys %hash{$key};