June 2018
Intermediate to advanced
316 pages
6h 34m
English
Content preview from Mastering High Performance with Kotlin
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Time complexity of lists
The following table shows the time complexity of the most common list operations:
| Add | Remove | Get | Contains | Data structure | |
| ArrayList | O(1) | O(n) | O(1) | O(n) | Array |
| LinkedList | O(1) | O(1) | O(n) | O(n) | Linked list |
| CopyOnWriteArrayList | O(n) | O(n) | O(1) | O(n) | Array |
The java.util.concurrent package includes special collections, such as CopyOnWriteArrayList or ConcurrentSkipListSet, that help you to avoid errors when different threads have inconsistent views of data that's stored in the same variable. These collections have similar public methods as regular collections, but can be used safely in multithreaded environments.
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