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In this video, we cover DSA in Java – HashMap (Part 01) as part of the Java in One Shot series. HashMap is one of the most ...

In this video, DSA in Java – HashMap 02, we cover important concepts of HashMap in Java as part of the Java in One Shot series.

In this video, we explain the internal working of HashMap step by step, covering everything from hashing, buckets, collision ...

In this video, you'll learn how to use HashMaps in Java SE from scratch through a practical and very common exercise ...

How does HashMap work internally in Java? In this video, we explain the internal working of HashMap in a simple and ...

HashMap in Java stores data in key–value pairs for fast access In this video, learn how HashMap works and when to use it.

You put a value in a HashMap. You know it's there. But when you try to get it back… it's null. This isn't a Java bug. It's an equals() ...

Hello so no one is talking about this inside Java let's say we have a hashmap for a hospital and we are storing number of visits of ...

In this video, we break down two commonly misunderstood data structures and explain when to use which, using clear logic and ...

In this video, we compare List vs Set vs Map in Java and explain how they differ within the Java Collection Framework. You'll get a ...

Choosing the wrong Map in Java can silently kill performance or break your multithreaded code ⚠️ In this video, we deep-dive ...

Yes, you can use a custom object as a key in HashMap — but only if you follow two critical rules ⚠️ In this video, you'll learn: ...

A high-level look at how HashMap stores data internally. Buckets, collisions, and storage and why HashMap is used instead of ...

On a vacation right now so can't do a leetcode. I mean I probably can but decided to do hash table instead. Hopefully it's ...

Why Should You Learn DSA Patterns in 2025? https://www.youtube.com/watch?v=qH2VQY48mg4 DSA Patterns Playlist: ...

In this video, we solve the Two Sum problem (LeetCode 1) and explain both the brute force and optimized HashMap approaches ...

Many Java developers know TreeMap is slower than HashMap, but do you know why? In this video, you'll learn: ✓ Internal ...

In this video, we deep dive into the internal working of HashMap in Java. This is one of the most important and frequently asked ...

Day 5/150 – LeetCode 150 Interview Questions Series (Java) In this video, we solve the “Group Anagrams” problem — a very ...