CloudKaptan Interview Experience

Non Coding Questions

1. What is Object Oriented Programming?
2. Can you explain in brief?
3. What is static and throws in main?
4. What is inheritance? Write a code and explain.
5. What is interface? Write a code and explain.
6. What is constractor? Write a code and explain.
7. What is polymorphism? Write a code and explain.
8. What is exceptions? Write a code and explain.
9. What if we first catch an Exception and then catch Arithmetic Exception? Which one will get executed first?

Coding Questions

1. Write a program to reverse a string word by word.
2. Why have you used StringBuilder? Write the code without StringBuilder. What is the time and space complexity?
3. Write a program to find Kth smallest element in an unsorted array.
4. Can you do it without sorting i.e. can you optimize the time complexity?
5. Please explain the solution and why use priority queue? What is the time and space complexity?