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Reverse a linked list
Submissions: 99734   Accuracy:

48.93%

  Difficulty: Easy   Marks: 2
Associated Course(s):   Sudo Placement   Sudo Placement [IITs] More
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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


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