Here’s a short and clear tabular comparison of ArrayList and LinkedList in English:
| Feature | ArrayList | LinkedList |
|---|---|---|
| Storage Mechanism | Uses a dynamic array internally. | Uses a doubly linked list internally. |
| Access Time | Fast for random access (O(1) for get). | Slow for random access (O(n) for get). |
| Insertion | Slow for inserting in the middle (O(n)). | Fast for inserting anywhere (O(1)). |
| Deletion | Slow for deleting in the middle (O(n)). | Fast for deleting anywhere (O(1)). |
| Memory Usage | Less memory as it stores only data. | More memory as it stores node pointers too. |
| Iterating | Faster with for loop. | Slower, requires traversal of nodes. |
| Use Case | Best for read-heavy operations. | Best for insert/delete-heavy operations. |
| Resizable | Automatically resizes when full. | Dynamically grows with new nodes. |
Code for arraylist:
code for linkedlist
