Zepto Software Development Engineer 3 Interview Questions and Answers

Design a Tic Tac Toe game with classes for the board, players, and game logic.

• Create a Board class to manage the game state and display the grid.

• Implement a Player class to represent each player and their moves.

• Use a Game class to handle the game flow, including turn-taking and win conditions.

• Example of board representation: a 3x3 array with values 'X', 'O', or empty.

• Implement methods for checking win conditions (...read more

Design a book reader service similar to Kindle

• Implement a user-friendly interface for browsing and purchasing books

• Include features like bookmarking, highlighting, and note-taking

• Support various file formats such as PDF, EPUB, and MOBI

• Provide options for customization like font size, background color, and reading progress tracking

Design Splitwise - an app for splitting expenses among friends

• Allow users to create groups and add expenses

• Track who owes how much to whom

• Support different currencies and payment methods

• Send notifications for pending payments

• Generate reports for easy settlement

Design an online book reader with features for reading, bookmarking, and sharing books seamlessly.

• User Authentication: Allow users to create accounts and log in to save their reading progress.

• Book Library: Provide a searchable library of books with categories like fiction, non-fiction, and genres.

• Reading Interface: Design a clean and intuitive reading interface with adjustable font sizes and background colors.

• Book...read more

Design a Google calendar

• Allow users to create events and set reminders

• Provide options for recurring events

• Include sharing and collaboration features

• Integrate with other Google services like Gmail and Maps

Design LLD of Dream11

• Use microservices architecture for scalability and flexibility

• Implement user authentication and authorization for secure access

• Utilize caching mechanisms to improve performance

• Design database schema for storing user data, teams, matches, and scores

• Include features like creating teams, joining contests, and viewing live scores

LLD stands for Low Level Design, which includes designing API and database schema for a software system.

• LLD involves detailed design of individual components/modules of a software system.

• API design includes defining endpoints, request/response formats, authentication mechanisms, etc.

• DB schema design involves defining tables, relationships, indexes, constraints, etc.

• LLD ensures that the system is scalable, maintain...read more