Everything is to be done in a single day so you come early morning and I believe there was 4 rounds total. Although I applied for freaking iOS developer position, all they asked was DATA STRUCTURE. I mean seriously they judge people IOS knowledge by the data structure. The manager, I guess doesn't know anything other than a couple data structure question as he couldn't ask me anything on iOS even after asking him that "Do you want to ask any iOS related question to me?" and he was like "No, thank you". I would say don't go there for the interview if you don't know data structure even though you want to apply as any Developer.
Honestly, disappointing manager and idiotic interview questions. Good luck with your search.