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Grokking the Coding Interview Patterns in C++

Solution: Reverse Nodes in Even Length Groups

Explore how to implement an in-place algorithm to reverse nodes in each even-length group in a linked list. This lesson helps you understand pointer manipulation, group counting, and efficient reversal techniques to modify linked lists without extra storage.

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Statement

Given the head of a linked list, the nodes in it are assigned to each group in a sequential manner. The length of these groups follows the sequence of natural numbers. Natural numbers are positive whole numbers denoted by (1,2,3,4...)(1,2,3,4...).

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