Can you explain when to use HashSet or TreeSet in Java?
Sure! Use HashSet when you need fast access and don't care about order. Use TreeSet when you need sorted elements.
What are the performance differences between them?
HashSet offers O(1) time complexity for basic operations, while TreeSet has O(log n) due to its sorted nature.
Are there any specific use cases for TreeSet?
Yes, TreeSet is great for scenarios where you need to maintain a sorted collection, like in range queries.
Can I store null values in both?
You can store null in HashSet, but TreeSet does not allow null values as it needs to compare elements.
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