How does the performance of ArrayList compare to other data structures?

How does the performance of ArrayList compare to other data structures?

ArrayList offers average O(1) time complexity for access and O(n) for insertion and deletion. Compared to LinkedList, it’s faster for access but slower for insertions.

What about memory usage? Is ArrayList more efficient?

ArrayList can be less memory efficient than LinkedList due to its underlying array structure, which may lead to unused space.

When should I use ArrayList over LinkedList?

Use ArrayList when you need fast access and fewer insertions/deletions. Choose LinkedList for frequent modifications.

Are there any scenarios where ArrayList performs poorly?

Yes, ArrayList performs poorly when there are many insertions or deletions in the middle of the list, as it requires shifting elements.