and the sort algorithm that takes O(n) time in the general case has yet to be invented
Well, but for this particular case, sorting numbers, it has already been invented!, it is called radix sort and there are at least two Perl implementations available from CPAN: Sort::Radix (pure perl) and Sort::Key::Radix (XS).

In reply to Re^2: Which one is best for optimization by salva
in thread Which one is best for optimization by luckypower

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