Meta Software Engineer Intern interview questions

Met at campus career fair Submitted resume Invited to first round. A lot of chatting, then tech questions. Invited to second round at HQ. Tech interview in the morning, then lunch, and A LOT more chatting, and getting to know Facebook. Questions. Round 1. 1. Function to check if 2 words are anagrams 2. Function to check if any 3 numbers sum to x. Round 2. You are given 2 streams of data, representing very sparse vectors you are guaranteed that the 2 incoming streams are of same size give a data structure which is optimized for producing the dot product of those sparse vectors analyze your runtime/space complexity, b) what if you are now told that v1, is much more sparse than v2 give another (or the same) data structure optimized for the dot product of any such 2 vectors (where 1 is more sparse than the other) analyze your runtime/space complexity,

Pretty quick. I went through 2 on campus interviews. The interviewers were friendly, and did not try to intimidate you. I did not think I did very well, but I still received an offer by the end of the week. From what I got from it, they do not have a very high standard for highering interns, but when it comes to extending an offer at the end of the internship, they prune aggressively.