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Tip: Java Collections Performance, LISTS

A list is an ordered collection of elements.


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Java collections - performance (Time Complexity)

A list is an ordered collection of elements.



                              Add   Remove   Get   Contains             Data Structure
ArrayList                     O(1)     O(n)   O(1)     O(n)             Array
CopyonWriteArrayList          O(n)     O(n)   O(1)     O(n)             Array
LinkedList                    O(1)     O(1)   O(n)     O(n)             Linked List

 

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Octavia Andreea Anghel is a senior PHP developer currently working as a primary trainer for programming teams that participate at national and international software-development contests. She consults on developing educational projects at a national level. She is a coauthor of the book "XML Technologies--XML in Java" (Albastra, ISBN 978-973-650-210-1), for which she wrote the XML portions. In addition to PHP and XML, she's interested in software architecture, web services, UML, and high-performance unit tests.
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