Three interview levels:

1. Problem Solving: Two programming questions.
2. Face-to-face technical: In-depth questions covering skills mentioned on the resume.
3. Final round managerial.

I was selected in all rounds and was offered a lower salary. For a few days, I denied it, but later confirmed I would accept the lower offer. However, they never sent me an offer. Worst experience.

Magic Square problem

Segregate 0s and 1s from an array

Java basics and collection framework, multi-threading, working of linked lists, hash sets

Spring Boot architecture, why microservices, when to use and when not to use them