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Cycle Detection in Undirected Graphs
Last Updated: May 18, 2026
Ashish Pratap Singh
7 min read
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What Is a Cycle in an Undirected Graph?
Why Cycle Detection Matters
Approach 1: DFS with Parent Tracking
Approach 2: Union-Find (Disjoint Set Union)
Approach 3: BFS with Parent Tracking
Comparison of Approaches
Step-by-Step Walkthrough
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Cycle Detection in D...
