Qualcomm Developer interview questions

Initially had a phone interview, which consisted basic questions on algorithms, C/C++, some puzzles. After a week 1:1 interview consisted of 4 technical and 1 with hiring manager. The technical consisted of the same stuff of above average level. Qualcomm asks a lot on bit manipulation in C. The interviews went well but did not receive any offer, reason given was hiring freeze.

I applied online, got a phone interview, and then was offered a chance to interview in person. I live close to San Diego so I drove my own car in the night before. They paid for a hotel that was very close to where I was suppose to meet my HR rep. I met the HR rep at 11AM, she gave me an overview of the company. Then I drove my car to the next stage of the interview process (I was offered a shuttle, but I didn't want it). This is where the real interview began. I had lunch with a software engineer, we talked about the company and he had a few softball questions for me. The next three interviewers appeared to be software engineers chosen at random. (At least to me.) I meet with them one at a time. Some asked good questions, some were not so good at interviewing. It was all that standard stuff. Then I meet with the final interviewer. He was very experienced in interviewing and asked lots of very pointed questions. After it was over they said they'd get back to me in a week or two either way.