Vector operations

I'm looking for something that can repeat a vector without. For exemple, here a is repeated 4 times :

a = [1,2,5];
b = cellfun(a, 4);

b = [1 1 1 1 2 2 2 2 5 5 5 5];

thx

Answer 1

[Wayne King]

One way:

a = [1,2,5];
b = reshape(repmat(a,4,1),12,1);

[Andrei Bobrov]

b = reshape(ones(4,1)*a,1,[]);