how can i combine two different matrics with different size become one matric that fixed size

according to my question how can i combine two different matrics with different size become one matric that fixed size ex :

A = [1,2,3,4,5]

B = [1,2,3,4,5,6,7,8]

becoming one matric that fixed size 1x15

C = [1,2,3,4,5,1,2,3,4,5,6,7,8,0,0]

or

A = [1,2,3,4,5]

B = [1,2,3,4,5,6,7,8,9,10]

becoming one matric that fixed size 1x15

C = [1,2,3,4,5,1,2,3,4,5,6,7,8,9,10]

Answer 1

[Azzi Abdelmalek]

C=zeros(1,15);
C(1:numel(A)+numel(B))=[A B]

[ktrx]

thanks sir :)

Answer 2

[Iain]

Take your pick:

C(15) = 0; C(1:numel(A)) = A; C((numel(A)+1):(1+numel(A)+numel(B))) = B;

C = [A, B, zeros(1,desired_size-numel(A)-numel(B))] ;