udaan.com Software Engineer interview questions

Was contacted by HR itself All rounds went good I felt. Interviewer were kinda arrogant. HR took 20 days to release the offer giving some weird excuses every time I called them. They expect you to join in 10 days when they have 60 days of notice period Initially there was a Machine coding round where I was asked to code parking lot system with all modules and classes. Next round was past projects round where they wanted me to explain any past projects and questions around it. Then design round was Design Twitter and trending topics. Last round was hiring manager round where he asked what work I did in past couple of Cultural fit questions and then asked me to design how to identify fake reviews out of millions for an app in Playstore.