Baithak 18: Arrays in Java | Memory Management | Stack vs Heap - Internal Working Explained

Welcome to the next lecture of “DSA Ki Baithak” 🚀 In this lecture, we officially begin our journey into Data Structures by learning the most fundamental and important data structure — Arrays. Most students learn how to create and use arrays, but very few understand how arrays actually work inside memory and why concepts like contiguous memory allocation and 0-based indexing exist. In this lecture, we first build a strong understanding of Arrays from scratch and then dive into the internal concepts that are frequently asked in coding interviews. 📌 Topics Covered ✅ Arrays in Java What is an Array? Why Arrays are needed? Real-life motivation behind Arrays Array Declaration & Creation Input in Arrays Output in Arrays Array Traversal Default Values in Arrays ✅ Internal Working of Arrays How Arrays are stored internally? What is Contiguous Memory Allocation? Why Arrays provide O(1) Access? Address Calculation Concept How indexing works internally? ✅ Memory Management in Java What happens when a Java program runs? Stack Memory vs Heap Memory Variables vs References Where Arrays are stored? How memory is allocated internally? ✅ Interview Concepts Why Arrays Start From 0? Why Contiguous Memory is Important? Stack vs Heap Questions Array Internal Working Questions Common Array Interview Questions 💡 This lecture is designed to help you understand not only how to use arrays, but also why arrays work the way they do. By the end of this video, you will have a much deeper understanding of Arrays than most beginners. 🔥 After Watching This Video You Will Know ✔ How Arrays work internally? ✔ Where Arrays are stored in memory? ✔ Why indexing starts from 0? ✔ Why contiguous memory is important? ✔ Interview-level Array fundamentals 🚀 Start Full DSA Journey Here 👇 ‘DSA Ki Baithak’ Playlist (Beginner → Advanced) 👉    • DSA🎯   If your goal is to build strong problem-solving skills, coding intuition, and placement-level DSA understanding, start from this playlist. 📄 Notes & Code: 🔗 GitHub Repository: https://github.com/Code-Baithak/DSA-k... 👥 Join WhatsApp Community: 🔗 Join Here: https://whatsapp.com/channel/0029VbCI... Get: Daily practice problems Lecture updates Notes & resources Coding discussions 🎯 Who Should Watch This? ✅ Beginners learning DSA ✅ College students ✅ Placement preparation students ✅ Java learners ✅ Anyone starting Arrays for the first time 📌 Hashtags #Arrays #Java #DSA #DataStructures #MemoryManagement #CodingInterview #LearnJava #ProblemSolving #PlacementPreparation #Programming