What is the performance of HashSet in C#?
An example of an AI chatbot conversation about the performance characteristics of HashSet in C#.
What is the performance of HashSet in C#?
HashSet in C# offers average O(1) time complexity for add, remove, and contains operations due to its underlying hash table implementation.
Are there any scenarios where HashSet might perform poorly?
Yes, HashSet can perform poorly if there are many hash collisions, which can degrade performance to O(n) in the worst case.
How does HashSet compare to List in terms of performance?
HashSet is generally faster for lookups and uniqueness checks, while List is better for ordered collections and indexed access.
What are some best practices for using HashSet in C#?
Best practices include initializing with a capacity if the size is known, using appropriate hash functions, and avoiding excessive resizing.
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