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Graphs

A comprehensive, beginner-to-advanced guide covering everything you need to master Graph DSA for technical interviews.


Follow this path from beginner to advanced:

StepTopicWhat You’ll Learn
1️⃣IntroductionWhat are graphs? Terminologies, types, properties
2️⃣Graph RepresentationsAdjacency matrix, adjacency list, edge list
3️⃣Time & Space ComplexityAlgorithm complexity, representation trade-offs
4️⃣Traversals (BFS & DFS)Breadth-First Search and Depth-First Search
5️⃣Important Patterns8 essential patterns with templates
6️⃣Key AlgorithmsDijkstra, Bellman-Ford, Kruskal, Prim, Floyd-Warshall
7️⃣Problem-Solving ApproachDecision framework, how to identify graph problems
8️⃣Code ExamplesFull JavaScript implementations
9️⃣Interview QuestionsCategorized Easy/Medium/Hard
🔟Tips & MistakesBest practices, optimization, edge cases
1️⃣1️⃣Real-World ApplicationsGraphs in networking, maps, social media, games

If You Need ThisGo Here
Understand the basicsIntroduction →
Pick a BFS/DFS templateCode Examples →
Solve “shortest path” problemsPatterns →
Review for an interviewInterview Questions →
Last-minute tipsTips & Mistakes →