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Given a linked list of N nodes. The task is to reverse this list.

Input:
First line of input contains number of testcases T. For each testcase, first line contains length of linked list and next line contains the elements of linked list.

Output:
Reverse the linked list and return head of the modified list.

User Task:
The task is to complete the function reverseList() which head reference as the only argument and should return new head after reversing the list.

Constraints:
1 <= T <= 100
1 <= N <= 103

Example:
Input:
2
6
1 2 3 4 5 6
5
2 7 8 9 10

Output:
6 5 4 3 2 1
10 9 8 7 2

Explanation:
Testcase 1: After reversing the list, elements are as 6->5->4->3->2->1.
 

** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Amit Khandelwal, Harshit Sidhwa
Author: deactjustCalvin


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