IntnRange generates an int64 integer in range [min,max).

Intn generates an integer in range [0,max).

IntnRange generates an integer in range [min,max).

Perm returns, as a slice of n ints, a pseudo-random permutation of the integers [0,n) from the default Source.

Seed seeds the rng with the provided seed.

String generates a random alphanumeric string n characters long.