For small hashes, ordering isn't necessarily "random" from one hash to the next: 

c:\@Work\Perl\monks>perl -wMstrict -le
"for (1 .. 8) {
   my @k = keys %{ { map { $_ => 1 } 0 .. 8 } };
   print qq{@k};
   }
"
6 3 7 2 8 1 4 0 5
6 3 7 2 8 1 4 0 5
6 3 7 2 8 1 4 0 5
6 3 7 2 8 1 4 0 5
6 3 7 2 8 1 4 0 5
6 3 7 2 8 1 4 0 5
6 3 7 2 8 1 4 0 5
6 3 7 2 8 1 4 0 5

[download]
Same results under ActiveState 5.8.9 and Strawberry 5.14.4.1.

Give a man a fish:  <%-{-{-{-<

In reply to Re^4: Pick k numbers at random -- hash keys by AnomalousMonk
in thread Pick k numbers at random by Chuma

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