I managed to pass the hiring committee after additional interviews, but was put on hold in the hiring process for a year in team matching. I still haven't received an offer from Google due to this, and many candidates are also in the same situation.

None of this was the interviewers' or recruiter's fault, as they were nice during the interviews, and the recruiter still kept me up to date throughout the year.

I signed an NDA and cannot disclose the questions, but many were solved using Hash Maps.