TikTok Machine Learning Engineer interview questions

OA has four hard coding problems, and the time allowed is two hours. I got contacted soon by HR to schedule an interview. The interviewer seems to be only interested in people who were CS majors, so I did not get a chance. That is why he did not even bother to give me a hard coding problem.

OA with 4 problems in 120 minutes, Q2, Q3, Q4 is quite challenging. 3 rounds VO, most of the questions are code questions, the interviewers are professional, but one of my interviews was delayed and I got notified only 20 minutes before it was supposed to start.