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Golf for unique digits

by Cody Fendant (Pilgrim)
on Jan 09, 2013 at 11:24 UTC ( #1012437=perlquestion: print w/ replies, xml ) Need Help??

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  1. or download this
    $y = 2013;
    ($y = join('',sort(split(//,$y)))) =~ tr/0-9//s;
    print "unique digits: " .  length($y) . $/;
    

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