Explanation

Given a Queue Q containing N elements. The task is to reverse the Queue. Your task is to complete the function rev(), that reverses the N elements of the queue. Example 1: Input: 6 4 3 1 10 2 6 Output: 6 2 10 1 3 4 Explanation: After reversing the given elements of the queue , the resultant queue will be 6 2 10 1 3 4. Example 2: Input: 4 4 3 2 1 Output: 1 2 3 4 Explanation: After reversing the given elements of the queue , the resultant queue will be 1 2 3 4.