🚀 Graph Tutorial 10: Detect a Cycle in an Undirected Graph using BFS | Data Structures | Graph

Опубликовано: 16 Июнь 2026
на канале: InterviewWithBunny
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In this video, I dive deep into cycle detection in an undirected graph using the Breadth-First Search (BFS) approach. Detecting cycles is a fundamental problem in graph theory and a crucial concept for coding interviews and competitive programming. This video is designed to help you understand how to use BFS effectively to determine whether a cycle exists in an undirected graph.

What’s Covered in This Video?
🔹 What is cycle detection? Why is it important for graph problems?
🔹 The difference between cycle detection in undirected and directed graphs.
🔹 Step-by-step algorithm for cycle detection in an undirected graph using BFS.
🔹 Detailed code walkthrough to implement the algorithm in Java.
🔹 Explanation with visual diagrams and examples for better understanding.
🔹 Discussion on edge cases and complexity analysis (time and space).


►►Playlist:
Graph Tutorial 1: Introduction to Graph | Types | Terminologies:    • 🚀 Graph Tutorial 1: Introduction to Graph ...  
Graph Tutorial 2: Representation of Graph in Java | Which one is Best :    • 🚀 Graph Tutorial 2: Representation of Grap...  
Graph Tutorial 3: Graph Simplified Implementation in Java:    • 🚀 Graph Tutorial 3: Graph Implementation S...  
Graph Tutorial 4 : Breadth First Search (BFS) | Traversal Technique:    • 🚀 Graph Tutorial 4: Breadth First Search (...  
Graph Tutorial 5 : Depth First Search (DFS) | Traversal Technique:    • 🚀 Graph Tutorial 5 : Depth First Search (D...  
Graph Tutorial 6: BFS & DFS Traversal For Disconnected Graph:    • 🚀 Graph Tutorial 6: BFS & DFS Traversal Fo...  
Graph Tutorial 7: Number of Provinces | Connected Components:    • 🚀 Graph Tutorial 7: Number of Provinces | ...  
Graph Tutorial 8: Number of Islands | Count Connected Components in Matrix:    • 🚀 Graph Tutorial 8: Number of Islands | Co...  
Graph Tutorial 9: Rotten Oranges Leetcode:    • 🚀 Graph Tutorial 9: Rotten Oranges Leetcod...  
Graph Tutorial 10: Detect a Cycle in an Undirected Graph using BFS:    • 🚀 Graph Tutorial 10: Detect a Cycle in an ...  
Graph tutorial 11: Detect a Cycle in an Undirected Graph using DFS:    • 🚀 Graph tutorial 11: Detect a Cycle in an ...  
Graph Tutorial 12 : Detect Cycle in a Directed Graph using DFS :    • 🚀 Graph Tutorial 12 : Detect Cycle in a Di...  
Graph Tutorial 13: What is Topological Sorting:    • 🚀 Graph Tutorial 13: What is Topological S...  
Graph Tutorial 14: Topological Sort Algorithm using DFS Traversal:    • 🚀 Graph Tutorial 14: Topological Sort Algo...  

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