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Intermediate·Concept·2 min read

Important .NET interview questions

C# / .NET implementationsDSAC# / .NETGood to know
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WANT TO UNDERSTAND THE CONCEPT FIRST?Learn Important .NET interview questions
  1. Difference between List<T> and Array?
  2. When should you use Dictionary<TKey, TValue> instead of List<T>?
  3. Why is HashSet<T> useful for duplicates?
  4. How does PriorityQueue<T> help with top-K problems?
  5. What is the difference between stack and queue?
  6. Explain BFS vs DFS with example.
  7. Why is binary search only used on sorted data?
  8. What is a greedy approach and when is it not safe?
  9. How would you detect a cycle in a linked list?
  10. How do you explain dynamic programming in simple terms?
Adapted from 17_DSA_DOTNET.md · “13. Important .NET interview questions”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.
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