EPAM Systems interview questions

First of all, I have received a call without scheduling from HR. During all the process the company changes the interviewer three times and I was lost looking for one of them to give me some feedback. The next step I had a hard technical interview, however, it was okay. The real problem is that I didn't have a feedback and the interviewers just disappeared.

EPAM India hires not only by campus recruitment but mostly by offcampus drives. I myself was selected by an off campus drive. There were 5 rounds in total. 1. Online coding challenge- where you will have 3 java questions to solve. 2. Onsite coding challenge- after getting selected by 1st round they will call you to pune or Bangalore and there this round will be conducted. This involves 2 or 3 coding questions and 1 part based on data structures and algorithms MCQ. this could be a tough round. 3. Tehnical interview round- i had a long 1 hour technical round where i was asked from basics of java to core java utmost concepts. 4. Group Discussion round- a normal round where they will give you a random topic and check if you speak or not. This is not generally a elimination round unless you are too lazy/shy to talk. 5. Final HR interview round- for me this round was also quite long. And the hr asked all classic hr questions and some his alterations of those questions.