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Solution: Maximum Twin Sum of a Linked List

Explore how to determine the maximum twin sum in a linked list with an even number of nodes by locating the middle node with fast and slow pointers, reversing the second half, and summing paired node values. This lesson helps you understand and implement an optimal O(n) time and O(1) space complexity solution for this common linked list problem.

Statement

In a linked list with an even number of nodes (nn), each node at position ii (using 00-based indexing) is paired with the node at position (n1in - 1 - i). These pairs are called twins for all 0i<n/ ...