Hashmap - Hashing, Internal Working, Collisions & Rehashing | Lecture 60 | JAVA and DSA

In this informative and educational video, Manvi Maam explores the topic of Hashmaps in Java programming language. With her clear and concise explanations, Manvi maam takes you through the basics of Hashmaps and demonstrates how to create and use them in your Java projects. Maam covers important concepts such as key-value pairs, hash codes, and bucket sizes, and provides practical examples to help you understand the underlying mechanisms of Hashmaps. Whether you're a beginner or an experienced Java programmer, this video is a must-watch for anyone who wants to learn about Hashmaps in Java. Join Manvi maam as she guides you through the world of Hashmaps and helps you unlock the full potential of Java programming.

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00:00 - Intro.
00:09 - Recap.
00:54 - Today's Checklist.
03:30 - Introduction to HashMaps.
09:25 - Hashmap Hierarchy.
12:23 - Working with Hashmaps.
13:27 - Question: Display Person Age.
37:20 - Features of HashMap.
38:48 - Applications of HashMap.
40:12 - Questions on Haspmap.
41:15 - Most frequent element in an Array.
01:00:43 - Internal Working Of HashMap.
01:04:09 - Hash Function.
01:07:50 - What is Hashing?
01:19:25 - Generally used Hash Functions.
01:26:40 - Collisions & Problems.
02:14:33 - Documentation.
02:16:00 - Open Addressing [ Closed hashing ].
02:21:05 - Double Hashing.
02:22:00 - Custom HashMap Implementation.
03:16:33 - Conclusion.
03:18:32 - Outro

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