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Grokking the Low Level Design Interview Using OOD Principles

A battle-tested guide to Object Oriented Design Interviews – developed by FAANG engineers. Master OOD fundamentals & practice real-world interview questions.

Intermediate

173 Lessons

50h

Certificate of Completion

A battle-tested guide to Object Oriented Design Interviews – developed by FAANG engineers. Master OOD fundamentals & practice real-world interview questions.
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This course includes

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8 Playgrounds
8 Quizzes
Course Overview
What You'll Learn
Course Content
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Course Overview

With hundreds of potential problems to design, preparing for the object-oriented design (OOD) interview can feel like a daunting task. However, with a strategic approach, OOD interview prep doesn’t have to take more than a few weeks. In this course, you’ll learn the fundamentals of object-oriented design with an extensive set of real-world problems to help you prepare for the OOD part of a typical software engineering interview process at major tech companies like Apple, Google, Meta, Microsoft, and Amazo...Show More
With hundreds of potential problems to design, preparing for the object-oriented design (OOD) interview can feel like a daunting task. However, with a strategic approach, OOD interview prep doesn’t have to take more than a few weeks. In this course, you’...Show More

TAKEAWAY SKILLS

Java

Software Engineering

Prepare For Interview

Object Oriented Design

What You'll Learn

An understanding of the essential object-oriented concepts like design principles and patterns to ace the OOD interview
The ability to efficiently breakdown an interview design problem into multiple parts using a bottom-up approach
Familiarity with the scope of each interview problem by accurately defining the requirements and presenting its solution
Learn to design class, use case, sequence and activity diagrams of the interview problems
Hands-on experience to create sequence and activity diagrams for the interview problems
Explore the implementation code of each designed problem using multiple programming languages (Java, C++, C#, Python, and JavaScript)
An understanding of the essential object-oriented concepts like design principles and patterns to ace the OOD interview

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Course Content

1.

Introduction

2 Lessons

This chapter introduces the course, including its prerequisites, structure, strengths, and the target audience.

2.

Cornerstones of Object-oriented Programming

6 Lessons

This chapter covers the background of OOP, focusing on encapsulation, abstraction, inheritance, and polymorphism, ending with a quiz on basics.

3.

Object-oriented Design

8 Lessons

This chapter explores how to conduct object-oriented analysis and design using UML, covering various diagrams like use case, class, sequence, and activity.

4.

Object-oriented Design Principles

7 Lessons

This chapter covers the SOLID design principles: Single Responsibility, Open Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion.

5.

Design Patterns

6 Lessons

This chapter teaches you about the classification of design patterns, including creational, structural, and behavioral patterns, followed by a quiz.

6.

Real-world Design Problems

1 Lessons

In this chapter, you will discover how to approach and solve real-world design problems using object-oriented principles and methodologies.

7.

Designing a Parking Lot

7 Lessons

This chapter covers the design of a parking lot system, including requirements, UML diagrams, and implementation code to illustrate practical application.

8.

Designing an Elevator System

7 Lessons

This chapter shows the design of an elevator system, detailing the requirements, use case, class, sequence, and activity diagrams, and the implementation code.

10.

Designing the Amazon Locker Service

7 Lessons

This chapter covers the design of the Amazon Locker Service, focusing on requirements, UML diagrams, and implementation code to create a complete system.

11.

Designing a Vending Machine

6 Lessons

In this chapter, you will learn the design of a vending machine, including requirements, use case, class, activity diagrams, and implementation code.

12.

Designing an Online Blackjack Game

6 Lessons

This chapter explores how to design an online blackjack game, covering requirements, use case, class, activity diagrams, and implementation code.

13.

Designing a Meeting Scheduler

7 Lessons

This chapter shows the design of a meeting scheduler system, detailing the requirements, UML diagrams, and implementation code for the complete design.

15.

Designing a Car Rental System

7 Lessons

This chapter teaches you the design of a car rental system, detailing requirements, UML diagrams, and implementation code for a functional system.

16.

Designing ATM

7 Lessons

In this chapter, you will discover the design of an ATM system, focusing on requirements, use case, class, sequence, activity diagrams, and implementation code.

17.

Designing a Chess Game

6 Lessons

This chapter shows the design of a chess game, including requirements, use case, class, activity diagrams, and implementation code to develop the game.

20.

Designing Stack Overflow

7 Lessons

In this chapter, you will learn the design of Stack Overflow, including requirements, use case, class, sequence, activity diagrams, and implementation code.

22.

Designing Facebook

7 Lessons

This chapter shows the design of the Facebook system, detailing requirements, use case, class, sequence, activity diagrams, and implementation code.

24.

Designing a Jigsaw Puzzle

4 Lessons

In this chapter, you will discover the design of a jigsaw puzzle, focusing on requirements, class diagram, and implementation code for the puzzle.

26.

Designing Cricinfo

7 Lessons

This chapter covers the design of the Cricinfo system, including requirements, use case, class, sequence, activity diagrams, and implementation code.

27.

Designing LinkedIn

7 Lessons

This chapter explores how to design the LinkedIn system, covering requirements, UML diagrams, and implementation code for a complete design.

28.

Wrapping Up

2 Lessons

This chapter concludes the course with valuable tips for excelling in object-oriented design interviews.

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Frequently Asked Questions

What is an object-oriented design interview?

An object-oriented design (OOD) interview is a specialized technical interview used to evaluate your understanding of object-oriented programming principles and your ability to apply these principles to solve design problems. Typically lasting 45-60 minutes, this interview covers the basics of object-oriented programming and more complex concepts such as design principles and patterns. This is crucial for roles at major tech companies like Apple, Google, Meta, Microsoft, and Amazon.

How to prepare for an OOD interview?

What are the principles of Low-Level Design?

How do you answer Low-Level Design questions?

What is the primary focus of this course?

Who should take this course?

What skills will I gain from this course?

What tools will I use to present solutions?

How will this course help me in a software engineering interview?

What companies’ interview processes are referenced in this course?