Youtor
Introduction to Arrays and ArrayList in Java
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http://youtube.com/watch?v=n60Dn0UsbEk
In this video we cover Arrays and ArrayList in Java from scratch. • We dive deep into how it works, the memory management, input/output, multidimensional arrays, dynamic arrays, working with functions, and solve some questions. • Take part in the learning in public initiative! Share your learnings on LinkedIn and Twitter with #DSAwithKunal don't forget to tag us! • 👉 Resources • Join Replit: http://join.replit.com/kunal-kushwaha • Complete Java DSA playlist: • Java + DSA + Interview Preparation Co... • Code, Assignments, Notes: https://github.com/kunal-kushwaha/DSA... • ➡️ Connect with me: https://www.techwithkunal.com • ========================================= • Timestamps: • 0:00 Introduction • 1:22 Why we need Arrays? • 2:58 What is an Array? • 3:13 Syntax of an Array • 4:26 Direct hit Program : Store 5 Roll Numbers • 6:44 How does Array works? • 8:42 Internal Working of an Array • 10:32 Dynamic Memory Allocation • 12:00 Internal Representation of Array • 13:06 Continuity of an Array • 16:25 Index of an Array • 19:53 String Array • 20:42 What is null in Java? • 23:30 null is used as a default • 27:55 Array Input • 31:19 for-each loop • 33:15 toString() Method • 34:52 Array of Objects • 36:25 Storage of Objects in Heap • 40:21 Array Passing in Function • 42:32 Multidimensional Arrays • 43:36 Syntax of a 2D Array • 45:20 Internal Working of a 2D Array • 50:16 2D Array Input • 1:01:06 2D Array Output • 1:07:05 Dynamic Arrays • 1:17:22 Array Functions • 1:21:08 Internal Working of ArrayList • 1:33:21 Questions • 1:33:30 Q1 : Swaping Values in an Array • 1:35:20 Q2 : Maximum Value of an Array • 1:40:45 Q3 : Reversing an Array • 1:44:20 Outro • #arrays #placement #dsa #interviews
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