Zazzle Software Engineer interview questions

Applied through a recruiter. Followed by a one hour phone interview with a senior software engineer. Discussed my previous work experience, I had an opportunity to ask questions about the role and the department. Invited to an onsite interview. Easy to medium difficulty coding challenge. Surprisingly hostile and demeaning attitude on the part of one of the interviewers.

First the recruiter went over my resume and asked me so background question. Then he gave me 3 technical questions to solve, which will be described in followings. After that, I asked him when I would get the results. He said one week. But 3 weeks have passed, and nothing comes back. I think I might fail.