Top Graph LeetCode Questions Asked in Microsoft Interviews
Graph algorithms are an important part of Microsoft software engineering interviews. These problems evaluate a candidate’s understanding of graph traversal, shortest path algorithms, and connectivity concepts.
In many coding interviews, candidates are expected to solve problems using techniques such as depth-first search (DFS), breadth-first search (BFS), topological sorting, and union-find (disjoint set).
In this guide, we have compiled some of the most frequently asked graph-related LeetCode questions reported in Microsoft interviews. Each problem includes its difficulty level, interview frequency, and a direct link to the original LeetCode problem so you can quickly start practicing.
Below is a curated list of graph LeetCode questions asked in Microsoft interviews.
| Sl.No | Question | Difficulty | Frequency | LeetCode Link |
|---|
| 1 | Clone Graph | MEDIUM | 38.60% | Solve |
| 2 | Course Schedule | MEDIUM | 37.90% | Solve |
| 3 | Find the Celebrity | MEDIUM | 9.80% | Solve |
| 4 | The Maze | MEDIUM | 2.67% | Solve |
| 5 | Design Excel Sum Formula | HARD | 2.07% | Solve |
| 6 | Number of Connected Components in an Undirected Graph | MEDIUM | 2.04% | Solve |
| 7 | Course Schedule II | MEDIUM | 1.77% | Solve |
| 8 | Reconstruct Itinerary | MEDIUM | 1.70% | Solve |
| 9 | Cheapest Flights Within K Stops | MEDIUM | 1.38% | Solve |
| 10 | Longest Increasing Path in a Matrix | HARD | 1.34% | Solve |
| 11 | Evaluate Division | MEDIUM | 1.28% | Solve |
| 12 | Word Ladder II | HARD | 1.22% | Solve |
| 13 | Friend Circles | MEDIUM | 1.02% | Solve |
| 14 | Alien Dictionary | HARD | 0.82% | Solve |
| 15 | Is Graph Bipartite? | MEDIUM | 0.76% | Solve |
| 16 | Network Delay Time | MEDIUM | 0.49% | Solve |
| 17 | Parallel Courses | HARD | 0.29% | Solve |
| 18 | Critical Connections in a Network | HARD | 0.03% | Solve |
| 19 | Possible Bipartition | MEDIUM | 0.00% | Solve |
You can also track your progress and practice these questions using our tool:
Microsoft LeetCode Interview Questions Tracker
How to Prepare for Graph Questions in Microsoft Interviews
To perform well in Microsoft coding interviews, it is important to understand common graph problem-solving patterns rather than memorizing solutions.
Some useful preparation strategies include:
- Practicing DFS and BFS traversal techniques
- Understanding topological sorting for directed graphs
- Learning shortest path algorithms such as Dijkstra’s algorithm
- Practicing Union-Find (Disjoint Set) for connectivity problems
Consistent practice with real interview questions will help you improve your algorithmic thinking and problem-solving efficiency, which is essential during technical interviews.
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