How does HashMap internally works | Java Interview Questions in Hindi
17:04
YouTubeLearn Code With Durgesh
How does HashMap internally works | Java Interview Questions in Hindi
In this video i am going to discuss how hasmap integrally stores values. HashMap is a part of the Java collection framework. It uses a technique called Hashing. It implements the map interface. It stores the data in the pair of Key and Value. Interview Series: Telegram Link for Doubt: https://t.me/learncodewithdurgesh Important Videos: ️React ...
139.2K viewsMar 3, 2022
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Ekta Agrawal on Instagram: "How does HashMap work internally? 🤯👇 Most asked Java Interview Question !! Stop memorizing theory! Visualize it. 🧠 Here is the step-by-step logic: 1️⃣ The Structure: It’s just an Array of "Buckets". 2️⃣ Hashing: hashCode() converts your Key into an Index (0-15). 3️⃣ The Collision: If two keys get the same index, they form a Linked List chain. 🔗 4️⃣ The Optimization: In Java 8+, if the chain gets too long (>8), it transforms into a Red-Black Tree for faster speed!
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