[Haskell-cafe] proper way to generate a random data in criterion

[Kazu Yamamoto ( 山本和彦 )]

Greg,

> The code looks ok to me -- you've deepseq'ed the list, and forcing it
> to whnf should force the deepseq. Also, criterion runs your benchmark
> many times, if your code was measuring the RNG time it would only
> happen once. This would show up in the criterion output as an
> unusually large outlier.

Thank you for your review. 

Because my benchmark seems OK, I need to think why the algorithm works
slower against random data. :)

--Kazu