Question

Write a function swapvectorends() that swaps the first and last elements of its vector parameter. ex: sortvector = {10, 20, 30, 40} becomes {40, 20, 30, 10}. the vector's size may differ from 4.

Answer 1

Depends on language, but the common way to do that is to create temporary variable.

length = len(sortvector)

temp = sortvector[0]
sortvector[0] = sortvector[length-1]
sortvector[length-1] = temp