A decorate-sort-undecorate or GRT (Guttman-Rosler Transform) approach would be even faster, but I forgot how to decorate for descending sort. It's probably somewhere in A Fresh Look at Efficient Perl Sorting. Must look it up...

Updates:

  1. See also Sort::Maker.
  2. According to the Wikipedia article linked by LanX herein, "decorate-sort-undecorate" is just another term for "Schwartzian Transform".

In reply to Re^3: two order sort by AnomalousMonk
in thread two order sort by ag4ve

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