Given an array arr[] of size n, write a program to reverse the array.

Example 1

Input: arr[] = [1, 2, 3]
Output: arr[] = [3, 2, 1]
Explanation: On reversing the array, the last element becomes the first and vice-versa.

Example 2

Input: arr[] = [4, 5, 1, 2]
Output: arr[] = [2, 1, 5, 4]
Explanation: On reversing the array, the last element becomes the first and vice-versa.