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Leetcode | 380. Insert Delete GetRandom O(1) | Medium | Java Solution
Insert Delete GetRandom O(1) - Leetcode 380 - Python
LeetCode 380: Insert Delete GetRandom O(1) | Java Solution | HashMap + ArrayList
Design data structure | Insert Delete GetRandom O(1) | Leetcode #380
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Last Updated: June 9, 2026
About on Leetcode 380 Insert Delete Getrandom O 1 Java Solution
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![[Java] Leetcode 380. Insert Delete GetRandom O(1) [Design #2]](https://i0.wp.com/ytimg.googleusercontent.com/vi/hru9opR7wG8/mqdefault.jpg?resize=320,180)
![LeetCode 380 (Medium): Insert Delete GetRandom O(1) | HashMap & ArrayList | Full Explanation [JAVA]](https://i0.wp.com/ytimg.googleusercontent.com/vi/ZggtRpRJeVU/mqdefault.jpg?resize=320,180)
![Insert Delete GetRandom O(1) | Day 12 | [June LeetCoding Challenge] [Leetcode #380] [2020]](https://i0.wp.com/ytimg.googleusercontent.com/vi/yeTmZxk6-v4/mqdefault.jpg?resize=320,180)
