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Reorder List

Explore how to reorder a singly linked list by rearranging node links in-place, folding the list onto itself without modifying node values. Understand constraints and develop a clear approach to efficiently manipulate linked list nodes for coding interviews.

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}L1L_{1}L2L_{2} ...