MATLAB: Interchange positions in a vector

Question

I have a vector let's say y = [1 2 3 4] and I want my next output to be y = [2 3 4 1] and then y = [3 4 1 2].

how can I do that without a for?

Answer 1

You can use circshift

y = [1 2 3 4];
y1 = circshift(y, -1);
y2 = circshift(y, -2);

Result

>> y1
y1 =
     2     3     4     1
>> y2
y2 =
     3     4     1     2