Machine Coding and Low-Level Design (LLD) rounds are integral components of technical interviews for software engineering positions. These rounds test your ability to transform your coding skills into real-world solutions and require a deep understanding of data structures, algorithms, and software architecture. To help you prepare effectively, I've compiled a comprehensive guide with resources, practice questions, and informative videos to ace these rounds. Most of the resources are based on , but you can get an idea and code with your preferred language. Java programming language Below are some sample questions for the machine coding round: Sample Questions Design a Parking Lot: Another classic LLD question. You are asked to design a parking lot management system. Design an Online Shopping System: A more complex LLD problem that tests your ability to design a scalable e-commerce system. Design an Online Auction System Recently asked me from one of the top companies - more about this later. Recently, I was researching LLD, and I was confused about how and where to start, so I came up with a strategy of my own. I started with the theory first with the help of by Yogita Sharma. She breaks down complex concepts into simple analogies and examples that you will remember easily. I would also suggest you start here and learn what are low-level design basics first and a few design patterns. sudoCode Then, move on to questions and practice them through the different resources mentioned below. Resources: Theory Short Video Lessons - Low-Level Design Course (sudoCode) Everything you need for LLD Interviews in one place - Grokking the Low-Level Design Interview The OG Book - (go through this only if you have enough/extra time to explore, probably months cause it takes you deep into theory) Design Patterns Questions and More Industry - (do at least 2-3 from this resource to get an idea of how the questions are framed) Standard Questions workat.tech - This YouTube playlist consists of most of the questions/solutions, Use case diagram creation, different design patterns, and more. (Mode of Language - Hindi) Concept && Coding - OG Again, most of the standard questions explanation with solutions. Soumyajit Bhattacharyay Mock Interviews Keerti Purswani (OG, GOAT for HLD and System Design) Guarav Sen Tips and Tricks Practice 😀 Only writing code and practicing can make you comfortable with these kind of interviews, and time management is must. Mostly time limit to complete the problem statement is 90-120mins for most companies. I have also practiced some of the machine coding questions myself. You can check out my GitHub repo for the same; I will keep updating it from time to time. Github - System Design and follow me for the latest updates. Star the repository, This is all you need. In conclusion, the Machine Coding and LLD rounds can be challenging, but with the right resources, practice, and understanding, you can excel in these interviews. Remember, it's not just about finding the right answer but also about demonstrating your problem-solving and design skills. So, immerse yourself in practice and theory, and you'll be well-prepared to tackle these technical interviews successfully. Good luck on your coding journey! All the best, and keep grinding.
