TikTok Software Developer interview questions

Got an invite to for the coding assessment. Had some issues logging in and setting up the camera but overall was smooth. The questions seemed very difficult. It was like Leetcode hard.

One hour call for first round of technicals. Interviewer did not speak fluent english and was difficult to understand. Even after achieving a solution, he insisted on solving the problem a certain way and ended up spending 45 mins on the first question.