Find and Exclude one Matrix from other

Question

I'm working on MATLAB. I have the following matrices

A = [
    1 2 3 4
    5 6 7 8
    1 5 2 3
    6 7 8 9
    1 3 6 2
    6 3 1 6
    9 7 4 7
];

B = [
    1 5 2 3
    6 7 8 9
];

I want to find A-B so that the answer should be like,

ans = [
    1 2 3 4
    5 6 7 8
    1 3 6 2
    6 3 1 6
    9 7 4 7
];

Answer 1

Use setdiff with the 'rows' and 'stable' options:

>> C = setdiff(A,B,'rows','stable')
C =
     1     2     3     4
     5     6     7     8
     1     3     6     2
     6     3     1     6
     9     7     4     7