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Foundation·Concept·2 min read

.NET DSA fundamentals

C# / .NET implementationsDSAC# / .NETShould know
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Common .NET collections

  • List<T> for dynamic arrays
  • Dictionary<TKey, TValue> for key-value lookup
  • HashSet<T> for unique values
  • Queue<T> for FIFO
  • Stack<T> for LIFO
  • LinkedList<T> for linked structure
  • PriorityQueue<T> for heap-based ordering
  • SortedDictionary<TKey, TValue> or SortedSet<T> for sorted behavior

Interview principle

Choose collection based on operation cost and ordering requirements.

Adapted from 17_DSA_DOTNET.md · “1. .NET DSA fundamentals”. 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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