Rotate One To Right in Scala

Given an array of integers nums, rotate it in-place by one position to its right.

Do not allocate extra space for another array. You must do this by modifying directly the input array with O(1) auxiliary space.

Example 1:

Input: nums = [1, 2, 3, 4, 5]
Output: [5, 1, 2, 3, 4]

Example 2:

Input: nums = [4, -2, 13, 1]
Output: [1, 4, -2, 13]

Your algorithm should run in O(n) time and use O(1) auxiliary space.