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Reverse Nodes in Even Length Groups

Understand how to reverse nodes in even length groups of a linked list by using sequential grouping and in-place reversal methods. This lesson helps you master linked list manipulation by identifying group sizes and applying reversal selectively, preparing you to solve similar coding interview challenges.

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...).

In other words:

  • The 1st1^{st} ...