Meta SDE-intern interview questions

Great, official and professional, leetcode question. perfect attitude, so nice make you feel less nervous. Simply leetcode question and a follow up, but only one round(it should be two round together and I don't know why)

Vitual interview, basic leetcode problem and follow up. pretty good, good attitude. Interviewer is so nice, although I didn't get the offer, I am still positive about this. Good company , good experience. But I only took one round and I didn't attend the OA, so I don't know if I means something or not.