Timer is Running

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

Example 1:

Input:
N = 6
value[] = {1,2,3,4,5,6}
Output: 6 5 4 3 2 1
Explanation: After reversing the list, 
elements are 6->5->4->3->2->1.

Example 2:

Input:
N = 5
value[] = {2,7,8,9,10}
Output: 10 9 8 7 2
Explanation: After reversing the list,
elements are 10->9->8->7->2.

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

Expected Time Complexity: O(N).
Expected Auxiliary Space: O(1).

Constraints:
1 <= N <= 104

 

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

Contributor: Amit Khandelwal, Harshit Sidhwa
Author: support3


If you have purchased any course from GeeksforGeeks then please ask your doubt on course discussion forum. You will get quick replies from GFG Moderators there.



Need help with your code? Please use ide.geeksforgeeks.org, generate link and share the link here.


to report an issue on this page.