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No need for code blocks, and it works very fast as well (as you'd expect from a greedy algorithm).
my $dime = '(?:' . ('1' x 10) . ')'; my $halfdozen = '(?:' . ('1' x 6) . ')'; my $nickel = '(?:' . ('1' x 5) . ')'; my $cent = '(?:' . ('1' x 1) . ')'; sub greedy_change { my $change = shift; my ($c10, $c6, $c5, $c1) = ('1' x $change) =~ /^($dime*)($halfdozen*)($nickel*)($cent*)$/; return (length ($c10 || "") / 10, length ($c6 || "") / 6, length ($c5 || "") / 5, length ($c1 || "") / 1); }

In reply to Re^2: The greedy change-making problem using regexes by Anonymous Monk
in thread The greedy change-making problem using regexes by blokhead

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