IBM

I had my online assessment, which consisted of two easy LeetCode questions. I received a different assessment for each job posting I applied to, but all were two easy LeetCode questions with 60 minutes to complete both.

Standard LeetCode hardware, plus a group interview. Nothing one wouldn't expect from IBM. The interviewer was very helpful in answering any queries I had regarding the question, but wasn't quite willing to divulge anything else.

Core Java & OOP What are the four pillars of Object-Oriented Programming? Can you explain each with examples? Difference between an abstract class and an interface? When do you use which one? What is polymorphism? Explain compile-time vs run-time