@letters = qw(a a a b b b c c c);;
@word = qw(a a a b b);;

++$h{$_} for @letters;;
--$h{$_} for @word;;

print map{ ($_) x $h{$_} } keys %h;;
c c c b

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In reply to Re: Subtracting one array from another (both have duplicate entries) by BrowserUk
in thread Subtracting one array from another (both have duplicate entries) by dougbot

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