You may have missed the dualvar solution. Sorting an array of dualvars involves zero hash lookups.

use Scalar::Util 'dualvar';

our @data;
while (my ($k, $v) = each %{$href}) {
    push @data, dualvar($v, $k);
}
# output array of dualvars; sorted by number, string
print "$_\t".(0+$_)."\n" for sort { $b <=> $a } sort @data;

[download]
# llil2.pl sort + output : 19 secs
# llil3.pl sort + output : 16 secs -- dualvar

[download]

In reply to Re^2: Rosetta Code: Long List is Long (Updated Solutions) by marioroy
in thread Rosetta Code: Long List is Long by eyepopslikeamosquito

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