Applied for a new grad position and received an email from the recruiter to set up a phone interview. I had a 45-minute interview with Google, calling from Mountain View. The interviewer sent me a Google Docs link and pasted a question while we were talking on the phone.

Given words in a dictionary, find if an abbreviation is unique. The interviewer was really bad at explaining that I had to figure out how the abbreviation was computed in the first place. I thought the abbreviations were given, and this wasted a lot of time.