Embedded Software Engineer, Reality Labs Research

Meta

Describe the difference between a stack and a queue. Provide an example of when you might use each data structure. Write functions to implement the push and pop methods for a stack and the enqueue and dequeue methods for a queue. Explain the time complexity of each of these operations. Additionally, discuss a scenario where you might need to implement a stack using a queue or a queue using a stack.

Meta

Let's design a database for a library. Consider the following requirements: Books: The library has a collection of books. Each book has a title, an author (or authors), a publication year, an ISBN, and a genre. A book can have multiple authors. Members: The library has members who can borrow books. Each member has a unique member ID, a name, an address, and a phone number. Borrowing: The library needs to keep track of which books are borrowed by which members and when they are borrowed and returned. A member can borrow multiple books, and a book can be borrowed by multiple members over time. Reservations: Members can reserve books that are currently checked out. The system needs to keep track of reservations and their order. Late Fees: The library charges late fees for overdue books. The system needs to calculate and track these fees. Based on these requirements, design a relational database schema. Include the tables, columns, data types, primary keys, and foreign keys. Provide a brief explanation for each table and the relationships between them. How would you handle the many-to-many relationship between books and authors? How would you handle the many-to-many relationship between members and borrowed books? How would you ensure data integrity, such as preventing a member from borrowing the same book twice at the same time?

Meta

Let's explore your motivations for applying to Facebook. To give me a comprehensive understanding, please elaborate on the specific factors that attracted you to our company. Consider these points in your answer: Company Mission and Values: How do Facebook's core values and mission align with your personal beliefs and career aspirations? Provide specific examples of Facebook initiatives or projects that resonate with you and explain why. Company Culture: Describe your understanding of Facebook's work culture. What aspects of our culture appeal to you, and how do you believe you would contribute to maintaining and enhancing this environment? For example, have you heard about our emphasis on open communication, rapid iteration, or continuous learning, and how do these resonate with your work style? Specific Opportunities: Are there particular teams, roles, or projects at Facebook that excite you? Detail why you are interested in these specific opportunities and how your skills and experience would be a valuable asset to the team. For instance, are you drawn to our work in AI, VR/AR, or social networking, and what specific projects are you aware of that match your skillset? Growth and Development: What are your long-term career goals, and how do you see Facebook helping you achieve them? Discuss the opportunities for learning, growth, and professional development that you believe Facebook offers and how these align with your aspirations. Impact: What kind of impact do you hope to make at Facebook? Do you want to influence millions of users, solve complex technical challenges, or contribute to innovative products? Explain how you would like to make a difference and why you believe Facebook is the right place for you to do so. By providing a detailed and thoughtful response that covers these areas, you will give me a clear picture of your passion for Facebook and your potential to contribute to our team.