More efficient way of this code?

Lets say that i have a function : y=fun(x,z) that do the following calculations :

ex1:

 fun([0 45 90],2) , y=[0 45 90 0 45 90]

ex2:

 fun([0 45 90],3) , y=[0 45 90 0 45 90 0 45 90]

My code is the following :

 Initialx=x;

 for ii = 2:z

    x=[x Initialx];
end

Is there a more efficient way to do it ? a vectorized or gennerally another way to impliment it?

Answer 1

[Andrei Bobrov]

fun1 = @(v,n)repmat(v,1,n)

Answer 2

[Image Analyst]

% Setup/initialize.
x = [0 45 90]
z = 3 % or 2 or whatever you want.

% Now get your y output:
y = repmat(x, [1,z])