76 characters, copes with dupes, returns a list of the longest words: 
sub f {
#        1         2         3         4         5         6         7
#234567890123456789012345678901234567890123456789012345678901234567890
+1234567890
for(<D>){$n=0;$o=$_;for$c(@_){$n+=s/$c//};push@{$w[$n]},$o if/^$/;}@{$
+w[-1]}
}

[download]
Can probably be shortened by the expert golfers round here.

andy.

In reply to andye - a different tack Re: "Countdown" (golf) by andye
in thread "Countdown" (golf) by stuffy

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