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Swap Nodes in Pairs

Explore how to swap every two adjacent nodes in a singly linked list without altering node values. This lesson helps you master in-place manipulation using optimal time and space complexity techniques, preparing you for similar linked list interview problems.

Statement

Given a singly linked list, swap every two adjacent nodes of the linked list. After the swap, return the head of the linked list.

Note: Solve the problem without modifying the values in the list’s nodes. In other ...