Solution: Reverse Linked List
Understand how to reverse a singly linked list by manipulating pointers in-place without extra memory. This lesson guides you through initializing pointers and iterating over nodes to reverse links efficiently. You'll learn to optimize for time and space complexity, crucial for coding interviews involving linked list operations.
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