Solution: Reverse Linked List
Explore the process of reversing a singly linked list by reassigning pointers in-place. Understand the use of three pointers to traverse and reverse the list in one pass, achieving O(n) time and O(1) space complexity. This lesson helps you implement an optimized linked list reversal and grasp pointer manipulation techniques for efficient coding interviews.
Statement
Given the head of a singly linked list, reverse the linked list and return its updated head.
Constraints:
Let n be the number of nodes in a linked list.
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n