What are the performance differences between Java data structures like ArrayList and LinkedList?
ArrayList offers faster access times due to its underlying array structure, while LinkedList excels in insertions and deletions.
Can you explain why ArrayList is faster for access?
Sure! ArrayList allows direct access to elements via their index, which is O(1) time complexity, while LinkedList requires traversal.
What about HashMap and TreeMap? How do they compare?
HashMap provides average O(1) time complexity for get and put operations, while TreeMap offers O(log n) due to its sorted nature.
When should I use a LinkedList over an ArrayList?
Use LinkedList when you expect many insertions and deletions, especially in the middle of the list, as it performs better in those scenarios.
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