Problem 44486. Vector push

Append an element x to the end of the vector v and return both the extended vector and the new number of its elements. x can be a vector as well.

In cases where v is a row vector and x is a column vector, or vice versa, v should remain a row/column vector. When v is originally empty, it should preserve the dimensions of x.

For example:

v = 1:5;
[v, n] = push(v, [6;7;8]);

Results in:

v = 1:8;
n = 8;