Find unique number sets

Given a 2D matrix, I'd like to find the number of rows with unique sets of numbers. For example:

A = [1 4;
     2 3;
     3 2;
     1 4];

The "unique sets" matrix return should be:

B = [1 4;
     2 3];

and the indices of these should be

iA = [1 2];

Using unique(A,'rows') sees [2 3] and [3 2] as unique, but I want to consider them as non-unique.

Answer 1

[Matt J]

A = [1 4;
     2 3;
     3 2;
     1 4];

[B,iA]=unique(sort(A,2),'rows')

B = 2×2

1 4 2 3

iA = 2×1

1 2

Answer 2

[Les Beckham]

A = [1 4;
     2 3;
     3 2;
     1 4];
B = unique(sort(A, 2), 'rows')

ans = 2×2

1 4 2 3