I got killed too. Performed so poorly 27%. I ended up with a 100 on the real one tho so don't lose hope. What you should do after looking at the problems is to make sure you brush on dp and graphs. From what I remember at least two of the three had dp or graphs. Neetcode has 10 lc for both ig. Check hackerrank's questions too. Try some hards and learn how to manipulate adjacencies, , etc. Wishing you luck! (Again, I was so stressed until I took it last minute. Keep practicing and getting better.)
I applied online. The process took 1 day. I interviewed at TikTok (San Jose, CA) in Oct 2022
Interview
I applied at their careers site. Got invited for hackerrank OA. Consisted of 5 questions. 2 MCQ. 1 medium coding question( Data structures). 2 hard dynamic programming. Could not pass test cases for hard due to hidden edge cases.
Two rounds of technical and one round of BQ. The overall difficulty is medium. The main topics includes walking through resume, discussing one of the projects, and coding test. Very nice overall experience.