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Solution: Middle of the Linked List

Explore two effective approaches to identify the middle node of a singly linked list. Understand the brute force method that calculates the length first, as well as the optimized two-pointer technique that finds the middle in a single traversal. Gain insights into the algorithm steps and their time and space complexities to enhance your linked list skills.

Statement

Given the head of a singly linked list, return the middle node of the linked list.

If there are two middle nodes, return the second middle node. This happens when the length of the list is even, and the second middle node occurs at length2\frac {length}{2}. Otherwise, if the length of the list is odd, the middle node occurs at length2+1\frac {length}{2}+1 ...