Razorpay

I was asked an LLD Question to design OMR Checker where the interviewer told me to apply OOPS + OS Concept into a single code and didnot provide me any code template. He asked me to ask relevant Questions to extract Information from him. It was a very complex problem as I had to not just give an input file and extract score. I should have the functionality that I can see any file in the process of using it. I didnot make it to second round