Question

I have a fixed sized array in Matlab. When I want to insert a new element I do the following:

1. To make room first array element will be overwritten
2. Every other element will be shifted at new location index-1 —left shift.
3. The new element will be inserted at the place of last element which becomes empty by shifting the elements.

I would like to do it without using any loops.

Answer 1

I’m not sure I understand your question, but I think you mean this:

A = [ A(1:pos) newElem A((pos+1):end) ]

That will insert the variable (or array) newElem after position pos in array A.

Let me know if that works for you!

[Edit] Ok, looks like you actually just want to use the array as a shift register. You can do it like this:

A = [ A(2:end) newElem ]

This will take all elements from the 2nd to the last of A and added your newElem variable (or array) to the end.