in reply to Quicksort problem
If you add print "@_"; to the top of your sub, you'll see the problem.
Even when @less, @great and $pivot are empty, you still recurse.
Changing your first line to: my $pivot=pop // return; will allow the recursion to terminate.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
In Section
Seekers of Perl Wisdom