What are some common use cases for HashSet in programming?
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What are some common use cases for HashSet in programming?
HashSet is often used for storing unique elements, such as in scenarios where you need to eliminate duplicates.
Can you give me an example of when to use HashSet?
Sure! A common example is when you want to track a list of unique user IDs in a system to prevent duplicates.
Are there performance benefits to using HashSet?
Yes, HashSet offers average O(1) time complexity for add, remove, and contains operations, making it very efficient.
What about memory usage? Is HashSet memory efficient?
HashSet can use more memory than other collections due to its underlying hash table, but it provides fast access.
Can HashSet be used in multi-threaded applications?
HashSet is not thread-safe by default, so you would need to use synchronization or consider ConcurrentHashSet.
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