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Grokking the Low Level Design Interview Using OOD Principles

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Introduction

Overview Introduction to the Course

Cornerstones of Object-oriented Programming

Background of Object-oriented Programming (OOP)Encapsulation Abstraction Inheritance Polymorphism Quiz: Object-oriented Basics

Object-oriented Design

Introduction to Object-oriented Analysis and Design (OOAD)

Introduction to the Unified Modeling Language

Types of UML Diagrams

Use Case Diagram

Sequence Diagram

Activity Diagram

Quiz: Object-oriented Design

Object-oriented Design Principles

Introduction to SOLID Design Principles SOLID: Single Responsibility Principle SOLID: Open Closed Principle SOLID: Liskov Substitution Principle SOLID: Interface Segregation Principle SOLID: Dependency Inversion Principle Quiz: Object-oriented Design Principles

Design Patterns

Introduction to the Design Patterns Classification of Design Patterns Creational Design Patterns Structural Design Patterns Behavioral Design Patterns Quiz: Design Patterns

Real-world Design Problems

An Approach to Solve a Real-world Problem

Designing a Parking Lot

Getting Ready: Parking Lot Requirements for the Parking Lot Design Use Case Diagram for the Parking Lot Class Diagram for the Parking Lot Sequence Diagram for the Parking Lot Activity Diagram for the Parking Lot Code for the Parking Lot

Designing an Elevator System

Getting Ready: Elevator System Requirements for the Elevator System Use Case Diagram for the Elevator System Class Diagram for the Elevator System Sequence Diagram for the Elevator System Activity Diagram for the Elevator System Code of Elevator System

Designing a Library Management System

Getting Ready: Library Management System Requirements for the Library Management System Use Case Diagram for the Library Management System Class Diagram for the Library Management System Sequence Diagram for the Library Management System Activity Diagram for the Library Management System Code of Library Management System

Designing the Amazon Locker Service

Getting Ready: Amazon Locker Service Requirements for the Amazon Locker Service Use Case Diagram for the Amazon Locker Service Class Diagram for the Amazon Locker Service Sequence Diagram for the Amazon Locker Service Activity Diagram for the Amazon Locker Service Code for the Amazon Locker Service

Designing a Vending Machine

Getting Ready: Vending Machine Requirements for the Vending Machine Use Case Diagram for the Vending Machine Class Diagram for the Vending Machine Activity Diagram for the Vending Machine Code for the Vending Machine

Designing an Online Blackjack Game

Getting Ready: Online Blackjack Game Requirements for the Online Blackjack Game Use Case Diagram for the Online Blackjack Game Class Diagram for the Online Blackjack Game Activity Diagram for the Online Blackjack Game Code for the Online Blackjack Game

Designing a Meeting Scheduler

Getting Ready: The Meeting Scheduler Problem Requirements for the Meeting Scheduler Use Case Diagram for the Meeting Scheduler Class Diagram for the Meeting Scheduler Sequence Diagram for the Meeting Scheduler Activity Diagram for the Meeting Scheduler Code for the Meeting Scheduler

Designing a Movie Ticket Booking System

Getting Ready: Movie Ticket Booking System Requirements for the Movie Ticket Booking System Use Case Diagram for the Movie Ticket Booking System Class Diagram for the Movie Ticket Booking System Sequence Diagram for the Movie Ticket Booking System Activity Diagram for the Movie Ticket Booking System Code for the Movie Ticket Booking System

Designing a Car Rental System

Getting Ready: The Car Rental System Requirements for the Car Rental System Use Case Diagram for the Car Rental System Class Diagram for the Car Rental System Sequence Diagram for the Car Rental System Activity Diagram for the Car Rental System Code for the Car Rental System

Designing ATM

Getting Ready: The ATM System Requirements for the ATM System Use Case Diagram for the ATM System Class Diagram for the ATM System Sequence Diagram for the ATM System Activity Diagram for the ATM System Code for the ATM System

Designing a Chess Game

Getting Ready: The Chess Game Requirements for the Chess Game Use Case Diagram for the Chess Game Class Diagram for the Chess Game Activity Diagram for the Chess Game Code for the Chess Game

Designing a Hotel Management System

Getting Ready: The Hotel Management System Requirements for the Hotel Management System Use Case Diagram for the Hotel Management System Class Diagram for the Hotel Management System Sequence Diagram for the Hotel Management System Activity Diagram for the Hotel Management System Code for the Hotel Management System

Designing the Amazon Online Shopping System

Getting Ready: The Amazon Online Shopping System Requirements for the Amazon Online Shopping System Use Case Diagram for the Amazon Online Shopping System Class Diagram for the Amazon Online Shopping System Sequence Diagram for the Amazon Online Shopping System Activity Diagram for the Amazon Online Shopping System Code for the Amazon Online Shopping System

Designing Stack Overflow

Getting Ready: Stack Overflow Requirements for Stack Overflow Use Case Diagram for Stack Overflow Class Diagram for Stack Overflow Sequence Diagram for Stack Overflow Activity Diagram for Stack Overflow Code for Stack Overflow

Designing a Restaurant Management System

Getting Ready: The Restaurant Management System Requirements for the Restaurant Management System Use Case Diagram for the Restaurant Management System Class diagram for the Restaurant Management System Sequence Diagram for the Restaurant Management System Activity Diagram for the Restaurant Management System Code for the Restaurant Management System

Designing Facebook

Getting Ready: The Facebook System Requirements for Facebook Use Case Diagram for Facebook Class Diagram for Facebook Sequence Diagram for Facebook Activity Diagram for Facebook Code for Facebook

Designing an Online Stock Brokerage System

Getting Ready: An Online Stock Brokerage System Requirements for the Online Stock Brokerage System Use Case Diagram for the Online Stock Brokerage System Class Diagram for the Online Stock Brokerage System Sequence Diagram for the Online Stock Brokerage System Activity Diagram for the Online Stock Brokerage System Code for the Online Stock Brokerage System

Designing a Jigsaw Puzzle

Getting Ready: Jigsaw Puzzle Requirements for the Jigsaw Puzzle Class Diagram for the Jigsaw Puzzle Code of Jigsaw Puzzle

Designing an Airline Management System

Getting Ready: The Airline Management System Requirements for the Airline Management System Use Case Diagram for the Airline Management System Class Diagram for the Airline Management System Sequence Diagram for the Airline Management System Activity Diagram for the Airline Management System Code for the Airline Management System

Designing Cricinfo

Getting Ready: The Cricinfo System Requirements for Cricinfo Use Case Diagram for Cricinfo Class Diagram for Cricinfo Sequence Diagram for Cricinfo Activity Diagram for Cricinfo Code for Cricinfo

Designing LinkedIn

Getting Ready: The LinkedIn System Requirements for LinkedIn Use Case Diagram for LinkedIn Class Diagram for LinkedIn Sequence Diagram for LinkedIn Activity Diagram for LinkedIn Code for LinkedIn

Wrapping Up

Interview Tips Conclusion

Types of UML Diagrams

Get familiar with the types of UML diagrams.

UML diagrams can be classified into two categories:

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