System Design Full Course - Iterator Design Pattern | UML + Code | System Design

Welcome to Lecture 29 of the Ultimate Low-Level Design (LLD) Series by Coder Army! Sixth week for #lowleveldesign #systemdesign #8weeksLLdchallenge. We are doing 8 weeks challenge and going to complete the whole course within the duration with quality content on Youtube. Let’s learn LLD like never before and attain advance level mastery on this subject. In this video, we’ll implement the *Iterator Pattern* from scratch in C++ / Java to decouple traversal logic from data structures—making your code cleaner, more extensible, and true to Low-Level Design principles. *What You’ll Learn* - Defining a generic Iterator T and Iterable T interface - Building a *LinkedListIterator* for sequential access - Creating an *Inorder Iterator* for binary trees using a stack - Implementing a *PlaylistIterator* to traverse collections of custom objects - Attaching iterators to classes so clients can loop uniformly over any structure - When and why to use the Iterator Pattern in real-world systems Join Coder Army Whatsapp Group: https://whatsapp.com/channel/0029Va6H0tbHVvTbcuT99Y1f Code and Notes: Github : https://github.com/adityatandon15/LLD Connect with Aditya Tandon Instagram : https://www.instagram.com/adityatandon2 LinkedIn : https://www.linkedin.com/in/adityatandon2 Twitter : https://x.com/adityatandon02 00:00 Introduction 00:49 Iterating on Objects 03:28 Why do we need Iterators 14:37 Example for Iterator Pattern 15:04 UML for Example 24:08 Clean UML 26:50 Code foe Iterator Pattern 36:29 Standard UML 37:06 Standard Definition 38:19 Further Extensions 39:25 Real world use caseder 01:47:28 Standard Definition #SystemDesign #LowLevelDesign #LLD #AdapterPattern #DesignPatterns #Cplusplus #JavaDevelopers #UMLDiagrams #TechInterviews #SoftwareEngineering #XMLtoJSON #CleanCode #SoftwareArchitecture #ObjectOrientedDesign #CodingWithExamples #CodeBetter #8WeeksLLDChallenge #JSON