resize matrix

[Manakamana]

Dear world,

I am seeking help to sort out a matlab problem.

I have got two large matrices with different size. For example

A= [1; 0; 2; 3; 4; 5];

B= [1; 2; 3; 5];


I want to make the matrix A similar size with B keeping only the cells that contain similar value of B matrix. Can anyone help me please.

Thanks for your help,

Mana