Intel Corporation Software Developer interview questions

Only one technical interview mixed up with hr. I applied for software engineer and had one algorithm question (how to sort an array, algorithm of my choice), one more mathematical to see how you solve problems. There were two guys, I think both of them engineers. They were very polite although one of them got annoyed when I said I don't know how to find angle in triangle and started to kick ball around the room which made me feel very uncomfortable and more nervous.

Registered via web site, filled CV form followed by step-by-step instructions. After 2 or 3 weeks, I was invited for an on-site interview. The interview took 3-4 hours including Algorithms, Data Structures and Computer Architecture quiz. Interviewers kindly give some tips when I was stuck.