find matching indexes

I have two matrices:

A: x rows and 5 columns
B: x rows and 6 columns (the first column contains indexes)

The values of the matrix A are included in the matrix B. I would like to find the indexes of the matrix A (one row)

[Doug Hull]

Huh? Please edit the question for clarity.

[Chandra Kurniawan]

'(the first column contains indexes)' for matrix B or both??

Answer 1

[karan]

Index_find = find(ismember(A,B));

[Daniel Shub]

Wow, apparently I guessed wrong about the question. Good work Karan.

Answer 2

[Daniel Shub]

I think you want something like

[x, ia, ib] = intersect(A, B(:, 2:end), 'rows');
B(1, ib)