MATLAB: Repeating Matrix Element Until N Times

matrix

Excuse me everyone, I want ask that how to repeating the matrix element like this example :

Example: y = [1; 2; 3; 4] and then I want the output like this (for example until N=7) :

Thanks

m=numel(y);
y(mod(0:N-1,m)+1)

y = @(m) sqrt... and so on

X = randi(100,10,100,10,100);
A = randi(20,10,100);
[k,l,m,n] = size(X);
z = bsxfun(@times,X,A);
out = reshape(sum(reshape(z,k*l,1,m,n),1),m,n);

out = squeeze(sum(reshape(z,k*l,1,m,n)));