adding two matrices of unequal length

I have two large matrices having different rows. for instanc, consider:

A=[1 2; 3 4; 5 6; 7 8; 9 0];
B=[7 5; 2 3];
Result=[8 7; 5 7; 12 11; 9 11; 16 5]

Now i want to add A and B such that: 1st row add with 1st, 2nd row with 2nd, 3rd row with 1st again, 4th row with 2nd again and so on. the process repeat till end.

Thanks in advance.

Answer 1

[Rik]

Result=A+B(1+mod(1:size(A,1),end-1),:);

(written on mobile, untested code)