Meta Software Developer interview questions

I applied on facebook site, and was contacted not so long after, told to schedule a date for an interview. I was called exactly the time given, interviewer went straight to the point. He gave a very brief introduction about himself and we went straight to coding. He asked me just one question but I couldn't give the right answer as I did not go over some basic data structures. I would advice that if you have an interview for any SWE, you should go over everything!