test.pl 90  ## array size = 90 (lots of repeat values)
           Rate sortcomp sortjoin     hash
sortcomp 2199/s       --     -53%     -61%
sortjoin 4645/s     111%       --     -18%
hash     5653/s     157%      22%       --

results: hash:diff sortjoin:diff sortcomp:diff

           Rate sortcomp sortjoin     hash
sortcomp 1907/s       --     -59%     -66%
sortjoin 4684/s     146%       --     -17%
hash     5659/s     197%      21%       --

results: hash:same sortjoin:same sortcomp:same