How to swap columns in a matrix?

Question

Arrays

How to swap columns in a matrix? There is a 5x5 matrix. You need to swap the first and second columns. In what ways can this be implemented?

Answer 1

If you use rectangular arrays - then only in a loop.
If you are using jagged arrays, then the data in the matrix must be in column-major order so that two columns can be jagged. But usually we use row-major in programming (so that the first index is on the X axis, so to speak), so if you have it, then, again, only cycles will help.