Description
2. Reverse Linked List
Given the head of a singly linked list, reverse the list, and return the reversed list.
Example 1:
Input: head = [1,2,3,4,5]
Output:[5,4,3,2,1]
Example 2:
Input: head = [1,2,3]
Output:[3,2,1]
Example 3:
Input: head = [1]
Output:[1]
Constraints:
- The number of nodes in the list is the range
[0, 5000]. -5000 <= Node.val <= 5000
Testcases
Case 1
Case 2
Case 3
Input:
head = [1,2,3,4,5]
Output:
[5,4,3,2,1]