How to compare an array with 2D matrix?

If I have an array A= [1,2] and matrix B= [3,4;8,6;1,2], How can I say that array A is present in B?

Answer 1

[KSSV]

doc ismember

[Emmanuel]

Thanks a lot! It works!! You are very helpful

Answer 2

[Image Analyst]

Try ismember() with the 'rows' option:

[~, matchingRows] = ismember(A, B, 'rows')

[Emmanuel]

Thanks!! That was really helpul. Is there a way I could return the indices? Also, it doesn't work when I have same elements multiple time in my MAtrix B. A returns only the first match in B, whereas the other matches are not getting noticed.

[Image Analyst]

Emmanuel, try this:

A= [1,2] 
B= [3,4;8,6;1,2; 4,5; 1,2]
[inA, inB] = ismember(B, A, 'rows')
matchingRows = find(inB)

[Emmanuel]

Yeah! That works. Thank you very much..