random distribution row number

I have matrix A with 1×10 elements and B with 1×125 elements. But elements in B are those elements in A only but randomly distributed. Now I want to get the row number of each element in B corresponding to matrix A.. can anybody help me .. thanks in advance

Answer 1

[Ive J]

[idxB, idxA] = ismember(B, A);

idxA is index of A members in B.