combs: Generate all possible combinations of vector elements

Generate all possible combinations of the elements of a given vector.

Generate all possible combinations of the elements of a given vector.

table = combs(v, k) returns a matrix containing all possible combinations of the elements of vector v selected k times (includes repetitions). Matrix table has k columns and n^k rows, where n is the number of elements of vector v.

>> combs([-1, 0, 1], 3)

ans =

    -1    -1    -1
    -1    -1     0
    -1    -1     1
    -1     0    -1
    -1     0     0
    -1     0     1
    -1     1    -1
    -1     1     0
    -1     1     1
     0    -1    -1
     0    -1     0
     0    -1     1
     0     0    -1
     0     0     0
     0     0     1
     0     1    -1
     0     1     0
     0     1     1
     1    -1    -1
     1    -1     0
     1    -1     1
     1     0    -1
     1     0     0
     1     0     1
     1     1    -1
     1     1     0
     1     1     1