Replace Duplicate Row Value in Matrix with other value of the matrix to create unique combination row wise

Hello everyone,

At this moment i am stuck with the following problem. I want to replace the duplicate values of each row with other value of the matrix. Each row will represnt a unqiue combination. For example,

My input matrix is

S = [3 2 3;  2 1 2; 1 2 1;  3 1 3;];

the output should be like:

S=[1 2 3;  2 1 3; 3 2 1;  3 1 2;];

Thanks in advance!

Answer 1

[dpb]

There doesn't seem any reason to pick one possibility over another other than arbitrarily so one approach would be something like

P=perms(1:3);
S=randperm(size(P,1),size(S,1));