Meta Software Engineer interview questions

I uploaded my resume to META's website. After a few days I received an email with instructions for the interview. The interviewer was really nice. This is my first interview. I still haven't received an answer. Hope I passed successfully. It took me a little while to answer the questions, but it might be okay...

The phone screening was enjoyable, short, and casual. The coding challenge in the second interview step was easy but high pressure. No "hints" were given to me at least or clarity on what the interviewer was looking for in an answer... I answer both coding challenge questions correctly but was told to perform them again in specific way the interviewer knew well, which it seems that the interviewer didn't know Python very well because he wanted me to answer the DSA questions Java style. I was half passed and told my interview would continue next year, which is good but not a full pass. Never got to systems design... yet.