Phase Shuffle takes a lot of memory, Is there any way to avoid this? Thanks.

function dlY=shuffle3d2(dlX)

num1=size(dlX,1);

num2=size(dlX,2);

num3=size(dlX,3);

k=randi([-2 2],1);

idy=1:num2;

idz=1:num3;

dlY=dlX;

if k>0

dlY(1:num1-k,idy,idz)=dlX(k+1:num1,idy,idz);

dlY(num1-k+1:num1,idy,idz)=dlX(num1-1:-1:num1-k,idy,idz);

elseif k<0

dlY(1:num1+k,idy,idz)=dlX(1:num1+k,idy,idz);

dlY(num1+k+1:num1,idy,idz)=dlX(1-k:-1:2,idy,idz);

else

end