Very time-taking process and confused process. First round was a DS/algorithms round where the interviewer was forced to ask 6 questions because I answered all his questions quickly except one. The interviewer was not knowledgeable himself, as he was Googling for questions and couldn't understand optimized answers easily, wherein he would get confused in recursion itself. He also used to expect the same answers which he found on the net. Second interviewer was a bit weird. He would change the question in the middle of my answers. He seemed to be confused big time as he couldn't articulate the questions properly. Like, what is the concurrency model in Java? [He expected an answer related to the memory model]. He also also asked the subset sum problem. I was deriving it through the DP table, but that guy wanted a mugged-up answer straight away. Instead of asking questions on problem-solving, he was asking about some concepts which are of Java 9. The interviewers' quality here was of low level. Not like big product companies. They have hired people who only know a few technology-specific questions and even don't have full knowledge about it. Then HR told me the feedback was positive and made me wait for 1 hour idle. They waste a lot of your time. And after some time, the recruiter came and informed me that the manager was still busy in a meeting. So, we'll have video conference rounds for you. After two days, when I called her, she informed me that they had some confusion over my profile and would not go ahead with it. Just wasted my time. The recruiter present there was from some other consultancy like Careenet. Wasted a lot of time.

Subset sum code.