Solution: Reverse Linked List
Explore how to reverse a singly linked list by manipulating pointers in-place without extra memory. This lesson teaches you to traverse the list, reverse node connections step-by-step, and update the head pointer, resulting in an efficient O(n) time and O(1) space solution. Understand this essential linked list pattern to improve your coding interview problem-solving skills.
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.