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

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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
 
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