PayPal Senior Software Engineer Interview Questions and Answers

Two sum related problem and advanced Priority Queue related questions

Q1. LLD and class diagram for Minesweeper game
Ans. 
LLD and class diagram for Minesweeper game
• Create classes for Board, Cell, Game, Player

• Use composition to represent relationships between classes

• Implement methods for revealing cells, flagging cells, checking for game over

• Consider using enums for cell states (covered, uncovered, flagged)

• Use UML notation to draw class diagram
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Hackerrank questions

Q1. Coding through screen sharing
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Q1. Discussion on previous projects
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Q1. Behavioural analysis
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Q1. Behavioural questions and discussions
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Hacker rank test - 2 medium questions

Q1. Create and implement product management system with APIs and test case
Ans. 
Design and implement a product management system with APIs and test cases
• Create a database schema to store product information

• Develop RESTful APIs for CRUD operations on products

• Implement authentication and authorization for API access

• Write unit tests and integration tests for APIs

• Use tools like Postman for API testing
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Q1. Low level design - parking lot
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Q1. High level design - streaming platform
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Q1. Basic questions on past experiences, projects and scenario based questions on how will you handle this and that
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Q1. Hashing based questions using maps
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