Pairwise Node Swapping, Removing the Nth Node from End, Intersection of Linked Lists, and Detecting Cycles in Linked Lists
Pairwise Swapping of Adjacetn Nodes in a Linked List
Given a linked list, swap every two adjacent nodes and return the head of the modified list. The operation must be performed by exchanging nodes, not by altering their internal values.
Implementation approach: Use a dummy head node to simplify edge cases. Iterate through the list, adjusting p ...
Posted on Wed, 13 May 2026 12:01:00 +0000 by Averice