Solution: Reverse Linked List
Explore the process of reversing a singly linked list in-place by manipulating node pointers without extra memory. Understand how to use three pointers to reverse the list efficiently with a single pass, gaining insight into time and space tradeoffs for this fundamental linked list operation.
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.