Solution: Reverse Linked List
Explore the process of reversing a singly linked list by manipulating pointers in place. Understand how to use three pointers to reverse links efficiently without extra memory, achieving a time complexity of O(n) and constant space usage, preparing you to handle linked list reversal confidently.
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.