What are the differences between ArrayList and LinkedList in Java?
An example of an AI chatbot conversation about comparing Java data structures.
What are the differences between ArrayList and LinkedList in Java?
ArrayList is backed by a dynamic array, while LinkedList is backed by a doubly linked list. This affects performance.
Can you explain how their performance differs in terms of adding and removing elements?
Sure! ArrayList has O(n) time complexity for adding/removing elements in the middle, while LinkedList has O(1) for adding/removing at both ends.
What about accessing elements? Is one faster than the other?
Yes, ArrayList is faster for accessing elements with O(1) time complexity, while LinkedList has O(n) due to traversal.
When should I use one over the other?
Use ArrayList for frequent access and LinkedList for frequent insertions/deletions.
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