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Solution: Reorder List

Understand how to reorder a singly linked list by locating its middle node using two pointers, reversing the second half, and merging both halves alternately without extra space. This lesson helps you apply in-place linked list manipulation techniques to optimize time and space complexity.

Statement

Given the head of a singly linked list, reorder the list as if it were folded on itself. For example, if the list is represented as follows:

L0L_{0} ...