I applied online. I interviewed at TikTok (State College, PA) in Oct 2021
Interview
OA, 2 easy questions. One for binary tree diameter, calculate the maximum length of a path in a binary tree, it can be solved using dfs. The other is a scheduling problem, find the maximum number of available rooms without conflicting.
Interview questions [1]
Question 1
What is the time complexity? Can you use stack instead of recursion?
I applied through a recruiter. I interviewed at TikTok
Interview
- recruiter asked me to speak in Chinese for latter half of screen
- 1st round was algo interview
- 2nd round was algo and system design
- didn't move forward after second round
Interview questions [1]
Question 1
- 1st round was simple 1D dp problem
- 2nd round was graph problem (Djikstra's) and ML system design
2 rounds coding a lot of background questions very strange behavior from interviewer camera was off and asked questions in mandarin, leetcode medium-hard and very very slow communication from recruiters based in asia for an english role
OA - 1 arrays Medium, 1 Trie Hard. I had 45 minutes to complete that. I was able to do the medium in about 15-20 minutes but I am not that great with trie ds so I was not able to finish.