Software Engineer(Internship) applicants have rated the interview process at Minimax Labs with 2 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 50% positive. This is according to Glassdoor user ratings.
Basically just java and OOP, including data types, encapsulation, access modifier, genetics and so on. All content could be found from the university's course, a thourough review of the slides really helped.