randsample
randsample(n, k, nc) returns a k-by-nc vector containing values sampled uniformly at random, without replacement, of the set 1:n. The third argument is optional and its default values is 1.
Examples
>> rng(0)% for tractability
n = 10 x = randsample(n,2)# 8 6
>> rng(0) x = randsample(n,5,2)# 9 1 7 10 8 9 5 3 6 4