NVIDIA Intern interview questions

Students are shortlisted on the basis of their resumes. Then one or two rounds of telephonic interview which was nice. Had a long discussion on project work. The interview lasted for about 45 mins. Had some basic questions first about strings and prime number. And the one question for nibble swapping. He then asks me questions related to my project - Classes, structure and all in detail. End of interview. Next day result declared and I was selected.