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# Big-O Complexities
- URL: https://www.javahandbook.com/java-arrays-mastery/arrays-big-o-complexities/
- Published: 2024-06-14T03:37:44.000Z
- Updated: 2026-07-11T13:47:12.000Z
- Description: Master array performance: O(1) access/append, O(n) insertion/deletion, O(log n) binary search. Learn worst-case scenarios, memory allocation costs, and optimization strategies for coding interviews and algorithm design.
- Author: Gopi Gorantala
- Tags: #docs, #java-arrays-mastery, Arrays Overview

![](https://storage.ghost.io/c/00/01/0001b1c8-8c52-4cdb-b3c7-c0746bea790e/content/images/2024/06/Big-O-Complexities.png)