Major League Baseball (MLB) Interview Question

Phone Interview with online coding (by a Senior Software Engineer): 1. Fizz buzz question 2. List, Map and Set in detail 3. Difference between abstract class and interfaces 4. Final class, final methods and final variables 5. Online coding again to extend the functionality of a class. Onsite Interview (5 hour): 1. Implement a contact manager - there are some functions that are stubbed and I had to add the implementation for that. Functions - Add a contact, Add a list of contacts, Search by first name and last name White boarding questions: 2. Object oriented design for a switch and light problem. Then how will you design for multiple switches to control one light. How will the light handle concurrent requests coming from multiple switches 3. Design an e-commerce store (best 5 things that can be bought) - looking for how we design data models 4. Scalability - pretty much extending on the e-commerce store design. Load balancing