Solution: Middle of the Linked List
Explore how to identify the middle node of a singly linked list using the optimized fast and slow pointers approach. This lesson guides you through traversing the list with two pointers moving at different speeds to determine the middle node in a single pass, reducing space usage to constant. Understand the algorithm steps, code implementation, and analyze the time and space complexities involved.
Statement
Given the head of a singly linked list, return the middle node of the linked list. If the number of nodes in the linked list is even, there will be two middle nodes, so return the second one.
Constraints:
Let n be the number of nodes in a linked list.
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n