p4raw-id: //depot/perl@11734
module from CPAN runs at least an order of magnitude faster. If you don't
have a C compiler (or a binary distribution of Algorithm::Permute), then
you can use List::Permutor which is written in pure Perl, and is still
-several times faster than the toy algorithm above.
+several times faster than the algorithm above.
=head2 How do I sort an array by (anything)?