Got a call from a recruitment firm, Scheduled the interview next weekday, recruitment lady told that there won't be any drive so it shouldn't take much time to finish the process.

But when I reached there already 15 people were writing the question paper. Attended the question paper, there were 2 questions, I solved both of them,still I was asked to leave. I tested the same solutions at my home after coming from interview and worked as expected, don't know why they rejected. I even tried to call the recruitment lady and sent my solutions to her to forward it to Optum team to have a look and tell me the reason what was wrong in that,but didn't get any response.

The whole process just wasted my time, I am happy to be rejected if they don't understand the simple Java logic, I don't want to work in such a crazy team. But it hurts when you got rejected without no reason.

Take your own decision, but I think the company is not worth for wasting a day, better just attend other interviews if you have one which I missed.

1. Given a string, and an integer k, Just output all the duplicate substrings of length k.

Nothing mentioned about the time, space complexity.

1. Given the hierarchy as below: 1: 3,4,5,6 . //employees who reports to 1 are with id as 3,4,5,6 3:12,10, 9 5: 100,23

Now you have given an id and tell all the direct as well as indirect reportees for that id employee. i.e: id: 1 Output: [3,4,5,6,12,10,9,100,23]