LearnThatStack Ace your next interview
C# · question
Q.14 of 99

What are the different types of generic collections in C#?

beginner
← All C# questions
Re-explain

List-based:

  • List<T> - Dynamic array
  • LinkedList<T> - Doubly linked list
    Set-based:
  • HashSet<T> - Unique elements, fast lookup
  • SortedSet<T> - Sorted unique elements
    Dictionary-based:
  • Dictionary<K,V> - Key-value pairs, fast lookup
  • SortedDictionary<K,V> - Sorted key-value pairs
  • ConcurrentDictionary<K,V> - Thread-safe dictionary
    Queue/Stack:
  • Queue<T> - FIFO collection
  • Stack<T> - LIFO collection
Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

The model's verdict: “

The interactive diagram is below the answer - jump to diagram ↓

This answer is explained by a shared concept diagram - open

Tailored explanation · switch back to · ·
Point the redraw:
How well did you know this?
AI:

Saved in this browser - sign in to keep your review list.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Interview lens

Likely follow-ups, what you can say, and the weak answers to avoid.

Sign in free to open it Free account - the lens opens as soon as you're back.

Want a quick review of the fundamentals? See the C# cheatsheet.

← Back to all C# questions
Pro · $10/mo

85 of 99 C# answers are gated.

Full answers, code samples, AI explanations - simpler, deeper, or as an interactive diagram. Cancel anytime.

  • Full answers + code
  • AI explain - simpler, deeper, or visualized
  • 1,000 AI credits / month
  • Cancel anytime