Given the head of a singly linked list, reverse it.
Example
Input: 1 -> 2 -> 3
Output: 3 -> 2 -> 1
Constraints: 1 ≤ n ≤ 10⁵
Reverse a Linked List
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Given the head of a singly linked list, reverse it.
Example
Input: 1 -> 2 -> 3
Output: 3 -> 2 -> 1
Constraints: 1 ≤ n ≤ 10⁵
Asked in