Senior Big Data Developer Interview Questions and Answers

Design a system similar to cars24, discussing components and design patterns.

• Components: User interface, database, search engine, recommendation engine, payment gateway

• Design pattern: Model-View-Controller (MVC)

• User interface: Allow users to search for cars, view car details, and make purchases

• Database: Store car information, user details, and transaction history

• Search engine: Enable users to search for cars based on various criteria

• Recommendation engine: Suggest cars based o...read more

Code for singleton design pattern, binary search, and finding minimum number of coins needed

• For singleton design pattern, create a private static instance variable and a private constructor

• For binary search, divide the array in half and compare the middle element with the target

• For finding minimum number of coins, use dynamic programming and iterate through the denominations

Code to find the maximum time occupied room given meeting slots.

• Sort the meeting slots based on start time.

• Iterate through the sorted slots and keep track of the maximum occupied time.

• Check for overlapping slots and update the maximum occupied time accordingly.