And again, you'll get roughly the same answers. If you aren't using the built-in sort, you should be. And if you were told you can't, you don't need our help: you need the help of the person placing artificial restrictions on your Perl code, because you aren't coding in Perl any more. This site is about best-practices Perl code (and the culture surrounding it), not about capricious instructor mandates.

-- Randal L. Schwartz, Perl hacker
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