HashMap Internal Working in Java | Bucket, Hashing, Collision, Rehashing | DSA & Java
Автор: HustleWithDroid
Загружено: 2025-12-12
Просмотров: 15
Ever wondered how HashMap works internally in Java? 🤔
In this video, we break down the complete internal architecture of HashMap including:
✔ How hash() function works
✔ How bucket index is calculated
✔ Collision handling using LinkedList / TreeNode
✔ Why HashMap gives O(1) average time
✔ When does worst case O(n) occur?
✔ Rehashing & Load Factor
✔ put(), get(), containsKey(), remove() internal working
This video is perfect for Java beginners, DSA learners, and interview preparation.
If you're preparing for Amazon, Google, Infosys, TCS, Wipro, or any product-based company, this topic is a must-know.
🔥 Watch till the end for complete HashMap explanation with diagrams!
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