HashMap in Java
HashMap in Java
88.6K viewsJul 18, 2023
intellipaat.com
Java program to count the occurrence of each character in a string using Hashmap - GeeksforGeeks
28:31
Java program to count the occurrence of each character in a …
Aug 21, 2018
geeksforgeeks.org
Govind Pothuraju on Instagram: "Day 20/200: How HashMap Works Internally HashMap is one of the most powerful data structures in coding interviews & real-world systems. Here’s how it works under the hood: ✅ Hashing: Key → Hash function → Index in array (bucket). ✅ Collision handling: Chaining (LinkedList/Tree in Java) or Open addressing. ✅ Time complexity: O(1) average for put/get, O(n) worst-case. ⚡ Mastering HashMap internals is a must for interviews — it shows depth, not just coding ability. F
Govind Pothuraju on Instagram: "Day 20/200: How HashMap Work…
5.1K views4 months ago
Instagramcodewith_govind
Govind Pothuraju on Instagram: "👉 Comment “CODE” if you want solutions in C++, Java & Python Day 34/200: LeetCode 904 — Fruit Into Baskets 🍎🍊 You are visiting a row of fruit trees represented by an integer array. You can pick only 2 types of fruits (since you have 2 baskets). Your goal: collect the maximum number of consecutive fruits before you’re forced to stop. ✅ Brute Force: Try all subarrays → O(n²) ❌ ✅ Optimal (Sliding Window + HashMap): O(n) ✅ Approach: - Use a window to store at most
2:45
Govind Pothuraju on Instagram: "👉 Comment “CODE” if you want sol…
16.4K views3 months ago
Instagramcodewith_govind
Sushant Kumbhar on Instagram: "🔍 Why HashMap Is Not Thread-Safe 1️⃣ No synchronization mechanism Methods like put() and get() are not synchronized. Multiple threads can update the map at the same time. 2️⃣ Unsafe resize (rehashing) operation During resize, the bucket array is restructured. Concurrent updates can corrupt bucket links. 3️⃣ Non-atomic operations put() involves multiple steps (hashing, indexing, insertion). Thread interleaving breaks operation consistency. ⚠️ Problems in Multi-Thre
0:12
Sushant Kumbhar on Instagram: "🔍 Why HashMap Is Not Thread-Safe …
13.9K views3 weeks ago
Instagramcodewith_sushant
Govind Pothuraju on Instagram: "👉 Comment “CODE” if you want solutions in C++, Java & Python Day 64/200: LeetCode 13 — Roman to Integer 🏛️ Convert a Roman numeral into its corresponding integer value. ⚡ Solve it efficiently using character mapping and traversal logic in O(n). Follow @codewith_govind for 200 days of DSA 🚀 #Day64DSA #LeetCode13 #RomanToInteger #StringProblems #HashMap #DSA #ProblemSolving #CodingInterview #LeetCode #CodeWithGovind #200DaysDSA #LearnDSA #Cplusplus #Java #Python
2:07
Govind Pothuraju on Instagram: "👉 Comment “CODE” if you want sol…
4K views1 week ago
Instagramcodewith_govind
Java HashMap 🗺️
13:05
Java HashMap 🗺️
103.1K viewsJun 1, 2020
YouTubeBro Code
Hashing in Java | One Shot | 5 Best Questions
290.3K viewsNov 23, 2022
YouTubeApna College
Design HashMap | LeetCode 706 | C++, Java, Python
17.6K viewsMar 7, 2021
YouTubeKnowledge Center
8:26
HashSet in Java
149.1K viewsFeb 1, 2021
YouTubeCodeWithHarry
21:19
Inheritance in Java
792.7K viewsOct 26, 2020
YouTubeCodeWithHarry
6:25
Data Structures: Hash Tables
1.5M viewsSep 27, 2016
YouTubeHackerRank
16:42
Java Tutorial: While Loops in Java
744.3K viewsSep 28, 2020
YouTubeCodeWithHarry
12:36
Try Catch Block in Java
296.1K viewsDec 30, 2020
YouTubeCodeWithHarry
29:08
Java Tutorial: Practice Questions On Conditionals & Switch Case
802.5K viewsSep 20, 2020
YouTubeCodeWithHarry
11:42
HashMap Java Tutorial #50
420.3K viewsMay 23, 2019
YouTubeAlex Lee
23:35
[PRACTICAL]How Hashmap works internally || Debugging || part 2
169.8K viewsFeb 4, 2018
YouTubeSelenium Express
10:01
Java Tutorial: Exercise 1 - Solutions + Shoutouts
799.5K viewsSep 11, 2020
YouTubeCodeWithHarry
19:35
Java Tutorial: Exercise & Practice Questions on Inheritance
270.9K viewsNov 10, 2020
YouTubeCodeWithHarry
20:42
Installing XAMPP, VS Code + Environment Setup | PHP Tutorial #1
1.7M viewsApr 10, 2020
YouTubeCodeWithHarry
10:10
Map and HashMap in Java - Full Tutorial
746.1K viewsJun 14, 2021
YouTubeCoding with John
15:51
HashMap, LinkedHashMap and TreeMap in Java
29K viewsNov 26, 2019
YouTubeEasy Learning
12:17
How To Iterate Hashmap In Java | 5 Different Ways!
7.9K viewsOct 30, 2020
YouTubeDevGuides
25:00
#11 - Different ways of creating HashMap in Java
35.5K viewsOct 26, 2020
YouTubeNaveen AutomationLabs
19:00
Introduction to Java + Installing Java JDK and IntelliJ IDEA for Java
11.3M viewsAug 30, 2020
YouTubeCodeWithHarry
23:05
#14 - linkedhashmap vs hashmap in Java || How LinkedHashMap work…
45.6K viewsOct 29, 2020
YouTubeNaveen AutomationLabs
13:08
this and super keyword in Java
521.7K viewsOct 29, 2020
YouTubeCodeWithHarry
32:49
Arrays in Java Part - 1 | Introduction to Java Arrays | Java Programmin…
219.5K viewsOct 12, 2018
YouTubeedureka!
13:12
Doubly Linked Lists Explained With Code in C Language
408.9K viewsAug 21, 2020
YouTubeCodeWithHarry
11:27
5 Best Ways to Iterate Over HashMap in Java
43.2K viewsMar 11, 2020
YouTubeJava Guides
See more videos
Static thumbnail place holder