Google Mobile Applications Developer interview questions

Applied online, got a call from the team lead of the job I was applying for. Had a very nice overview on how the interview process would go and what to revisit/study (e.g. algorithms, Big O nation, performance, system design). Had the first phone interview about a week later with an engineer for the US. Fairly basic questions on object-oriented design, coding practises, networking (explain how your mobile phone talks to a web site) and such. No major problems with this and was invited for on-site interview. 4 back-to-back 45min minute interviews with a few minutes break in between. All the developers involved had a C/C++ background (I was applying with a Java/JavaME background). Numerous problems related to bit flipping/masking, graph algorithms, some design patterns, performance, application design, specific networking API questions. Had a hard time with some of the questions due to the very low nature (something that I hadn't done at all since pre-uni studies), so while was able to solve many of the problems, there were enough to make me fail the interviews. Got a call a few days later, "won't be progressing further with the application" - which was well expected based on how it went. Your success really depends a lot on which questions get picked, the background of the interviewers and how well you've rehearsed (math, algorithms, puzzles etc).