How to these permutations?

Hello,

Suppose I have a vector of N elements, and I need to find all possible permutations {N \choose n} for n=1,2, ..., N. How can I do that?

Example: Suppose I have the vector [1 2 3], then all possible permutations are: 123 (n=3), 12, 13, 23, (n=2), 1, 2, 3 (n=1)

Thanks

[Oleg Komarov]

doc nchoosek

[S. David]

I did not know it is built-in in MATLAB. Thanks

Answer 1

[Junaid]

Take a look over this link. This might be useful for you.

[S. David]

It is not working. I do not know why. I think choosek does the job. Thanks anyway