2D Array in Java | Spiral Matrix | Rotate Matrix 90° | Search in 2D Matrix | DSA in Java Course #15
2D Array in Java | Spiral Matrix | Rotate Matrix 90° | Search in 2D Matrix | DSA in Java Full Course | Master Data Structures & Algorithms Using Java In this video, we will learn 2D Arrays in Java from scratch and solve the most important Matrix interview problems step-by-step using Java. This lecture is extremely important for Coding Interviews, Placements, and DSA mastery. DSA In JAVA Series :- • DSA in Java Full Course (Hindi) | Complete... 📌 Topics Covered ✔️ What is a 2D Array in Java ✔️ Traversing / Printing a 2D Array ✔️ Taking User Input in 2D Array ✔️ Sum of All Elements in 2D Array ✔️ Row-wise Sum ✔️ Column-wise Sum ✔️ Linear Search in 2D Array 🧩 Matrix Interview Problems (LeetCode) 1️⃣ Transpose Matrix 🔗 https://leetcode.com/problems/transpo... 2️⃣ Spiral Matrix 🔗 https://leetcode.com/problems/spiral-... 3️⃣ Rotate Image (Rotate Matrix by 90 Degrees) 🔗 https://leetcode.com/problems/rotate-... 4️⃣ Search in a 2D Matrix 🔗 https://leetcode.com/problems/search-... Perfect for placements, coding interviews, and those mastering DSA in Java. Full Stack Web Dev playlist: • Full Stack Web Development Course (Hindi) ... Java Playlist :- • Java Mastery Course Latest React 19 playlist : • 🚀 React JS Full Course in Hindi (2026) | C... Code :- https://github.com/sumanmalakar/DSA_I... Notes :- https://drive.google.com/drive/u/0/fo... Donate Us | If our tutorials inspired you, please donate to help us create more amazing content :- https://drive.google.com/file/d/10GBJ... TIMESTAMPS 00:00:00 | Intro 00:01:01 | 2D Array 00:05:05 | 2D Array Declaration 00:07:10 | 2D Array Representation in Memory 00:16:40 | 2D Array Printing 00:20:47 | Dry Run 00:27:10 | Input from user 00:34:13 | 2D Array element sum 00:37:35 | Row - wise sum 00:39:58 | Column - wise sum 00:43:58 | Search element in 2D Array 00:50:09 | Ques1 - Transpose Matrix 00:50:50 | approach to solve 00:56:43 | Let's write code on Leetcode 00:58:23 | Time & Space Complexity...? 00:59:07 | Ques2 - Spiral Matrix 01:00:40 | approach to solve 01:11:25 | Let's write code on Leetcode 01:28:03 | Dry Run 01:33:52 | Time & Space Complexity...? 01:34:44 | Ques3 - Rotate Image (Rotate Matrix by 90 Degrees) 01:36:35 | approach to solve 01:40:38 | Let's write code on Leetcode 01:42:48 | Dry Run 01:52:10 | Time & Space Complexity...? 01:52:38 | Ques4 - Search in a 2D Matrix 01:54:21 | approach to solve 02:09:04 | Let's write code on Leetcode 02:14:50 | Time & Space Complexity...? 02:15:40 | Outro Join Our WhatsApp Channel :- https://www.geeksforgeeks.org/problem... Mastery Courses :- • Full Stack Web Development + Java/C++ Cour... Crash Course :- • Crash Course React Animated Portfolio Website :- • Build React Animated Portfolio 2025 In Hin... React Shopping Cart Project :- • 🛒 React Shopping Cart E-Commerce Website i... React.js Project playlist :- • React.js Projects (Beginner → Advanced) | ... All React Hooks In One Shot :- • All React Hooks In One Video With Notes In... Node.js playlist :- • Node JS & Express Backend Development Full... MERN E - Commerce :- • MERN Stack E-Commerce Website with Razorpa... ►My Girlfriend :- https://amzn.to/3EvmSkD Reach Me Out ----------------------------------------------------------------------------------------------------------------------- Linkedin :- / suman-malakar Instagram :- / suman_malakar001 facebook :- / sumankumar.malakar.9 GitHub :- https://github.com/sumanmalakar ----------------------------------------------------------------------------------------------------------------------- Product I use for coding and YouTube ----------------------------------------------------------------------------------------------------------------------- Laptop :- https://amzn.to/4oloWRG SSD :- https://amzn.to/47NUp7c HardDisk :- https://amzn.to/3KGSaZ9 keyboard :- https://amzn.to/3YGXIJ3 Mouse :- https://amzn.to/45uSylF Headphone :- https://amzn.to/3KGSaZ9 Web Cam :- https://amzn.to/3QK978T Microphone : - https://amzn.to/3KGSaZ9 Business Email: [email protected] Personal Channel: / @sumanmalakar18 #java #dsa #coding #programming #datastructures #algorithms #placement #searching #binarysearch #sorting
