random cover of a range

[bearophile]

Jason House:
> Believe it or not, that's an unreasonable requirement. IIRC, most RNG's have periods such as 2^32. You can't get more permutations than that. Somewhere in the ballpark of 17 elements, your requurement becones impossible to meet without a highly specialized RNG. I hope someone can prove me wrong about that!<

Mersenne Twister has a period much longer, if you want.
For even longer permutations you have to generate them in a different way.

Bye,
bearophile