Qualcomm Software Developer interview questions

I went to the career fair offered at my school and dropped off my resume at Qualcomm. About 2 weeks later I was contacted by a recruiter who scheduled an interview for me on campus. It was a one time interview and I got an offer less than a week after. I got 2 coding questions and one puzzle. The first one was to identify bugs on some simple code. Second one was to return the most frequent character in a given string.