How can i obtain the following matrix in matlab?

Let we have a set D={1,2,3} from this set. How can we construct a matrix as follows: M=[1 1; 1 2; 1 3; 2 1; 2 2; 2 3;3,1; 3,2; 3,3] I try the command  "combntns(D,2)" but it don't give [1 1;2,1; 2...

01 January 1970 2,956 7 View