NVIDIA interview questions

I had two technical phone interviews and then I got invited to the Santa Clara office for the on-site interview. I meet with 7 people, 6 of which where from the team I am joining and the last person was from the HR. The on-site interview was intense, lots of coding and research related questions. However, it was a great experience. All the people I met with were nice and professional. I got a good offer within a week and I accepted it with no hesitance.

3 phone interview, 2 technical and 1 interpersonal with the hiring manager. First phone interviews technical question was to write a binary search tree class in C, it should implement insertions, deletions and search functions. Second interview technical question was to implement a clipping algorithm in pseudo-code that could handle more clip windows than were supported in hardware. Third interview had a number of personal and moral questions. Made it to the on-site. Was asked to write my own implementation of Tail in C, was asked to write an algorithm in C that would determine if a point lay within any polygonal bounding area, and was asked to write a function that could print any UTF string in reverse. Lunch interview where I was allowed to ask question about the company, and then a personal interview with HR and the hiring manager.