Browse DevX
Sign up for e-mail newsletters from DevX

Tip of the Day
Language: Java
Expertise: Intermediate
Jul 26, 2017

Java Collections Performance, SET

Java collections - performance (Time Complexity)

A set is a collection that contains no duplicate elements.

                         Add       Next     Contains        Data Structure
HashSet                  O(1)       O(h/n)     O(1)          Hash Table
EnumSet                  O(1)       O(1)       O(1)          Bit Vector
LinkedHashSet            O(1)       O(1)       O(1)          Hash Table+Linked List
TreeSet                  O(log n)   O(log n)   O(log n)      Red-black tree
ConcurrentSkipList       O(log n)   O(1)       O(log n)      Skip List
CopyonWriteArraySet      O(n)       O(1)       O(n)          Array
Octavia Anghel
Thanks for your registration, follow us on our social networks to keep up-to-date