TikTok Developer interview questions

tiktok recruitment/hiring event, after resume screening, they will notify you on moving to the interview stage where there are 3 rounds back to back across 3 hours. each round consists of system design and live coding (leetcode medium)

OA: There are five questions in total. The SQL question will use groupby and CTE. The coding question are medium level array and string questions. The sliding window will be tested. (you won't pass all the test if your solution is O(n2)