How can find column wise similarity of two matrix?

I have two matrice such as

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

If we look at these two matrices column wise, it is same at index 2 and 7. How can i find the index array [2 7] ?

Thanks!

Answer 1

[Chunru]

A=[3  1  1  2  1  3  3  2  
    1  1  2  1  3  2  3  2 ];
B=[ 2  1  3  3  1  2  3  1  
    1  1  1  2  2  2  3  3 ];
find(all(A-B==0))

ans = 1×2

2 7

[darova]

There is a problem

A = [1 2];
B = [1 2];

[Chunru]

A = [1 2];
B = [1 2];
find(all(A==B, 1))     % explicitly 1st dimension (column wise)

ans = 1×2

1 2

A=[3  1  1  2  1  3  3  2  
    1  1  2  1  3  2  3  2 ];
B=[ 2  1  3  3  1  2  3  1  
    1  1  1  2  2  2  3  3 ];
find(all(A==B, 1))      % work for this too

ans = 1×2

2 7

Answer 2

[Awais Saeed]

Just use

idx = find(all(A == B))
idx =

   2   7