TikTok Data Science Intern interview questions

First ask me some projects I have done and some machine learning questions. Then coding test, my problem is about binary tree. Last ask me a simple probability question. The whole interview takes about 45 miniutes.

2 technical interviews, 30-40 minutes for each: 1 sql question, 1 A/B testing and some follow-ups, some question about your previous project and technical related follow-ups 1 interview with HR specialist including your career plan, why want to join Tiktok, what's your understanding of DS, DA and PM?