Find the indeces of common elements of

Hi all,

I have two vectors and I need to find the index of the common elements between the two vectors, but the position of the indeces should be like the first array.

Here an example:

a=[7 10 33];
b=[33 7];

result=[3,1];

I would use setdiff like [C,ia] = setdiff(A,B,'stable'), but C has the same order of array A and I cannot swap A with B. In my case all the elements of B are always included in A.

Thank you

Regards

Pietro

Answer 1

[Stephen23]

You can use bsxfun quite effectively for this:

>> a = [7,10,33];
>> b = [33,7];
>> [R,~] = find(bsxfun(@eq,a(:),b))
R =
   3
   1

[pietro]

thanks!