MATLAB: Merging and overwiting vectors

Question

Hi

Say I have a vector A = [1;2;3;4;5;6] and B = zeros(20,1). How can I merge those two, in such a way that the size of the resulting vector to have size 20 x 1 and the content of the vector to be [1 2 3 4 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0].

When trying Y=[A;B] the results is a 26 element vector.

Thanks for any advice.

Answer 1

Y = B;
Y(1:numel(A)) = A;