Linked List Algorithms: Pairwise Swapping, Targeted Removal, and Cycle Analysis
Swapping Adjacent Nodes in Pairs
Manipulating node connections uniformly requires a sentinel (dummy) node to eliminate edge cases for the head element. To exchange adjacent pairs, position a reference pointer immediately before the pair undergoing modification.
The iterative approach tracks three critical references: the node preceding the pair ...
Posted on Mon, 13 Jul 2026 17:21:33 +0000 by jon23d