Solution: Reverse Linked List
Explore the process of reversing a singly linked list by manipulating node pointers in place. This lesson guides you through initializing pointers and reversing links step-by-step, enabling you to implement an efficient algorithm with O(n) time and O(1) space complexity. By the end, you will confidently reverse linked lists without extra memory usage.
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.