![LeetCode 380 (Medium): Insert Delete GetRandom O(1) | HashMap & ArrayList | Full Explanation [JAVA]](https://i.ytimg.com/vi/ZggtRpRJeVU/mqdefault.jpg)
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Last Updated: September 30, 2026
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This video has the Problem Statement, Solution Walk-through and Code for the This problem challenges you to design a data structure that supports neetcode.io/ - A better way to prepare for Coding Interviews Discord: discord.gg/ddjKRXPqtk Twitter: ... In this problem, we implement a data structure that supports constant time insertion, deletion, and random element retrieval. In this video, we'll solve the " Can you solve this question with basic data structures List and HashMap?* Welcome to channel _Trial & ErrCode_ ! Description:** Learn how to implement a data structure that supports In this tutorial, I have discussed how we can implement This video explains a very important design based programming interview problem which is to design a data structure where ... Please and to the channel. In this video, we will look into solving the problem to create a data structure where the ...
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