OYO Software Engineer interview questions

there were total 4 rounds. 1 written, 2 tech interview and 1 hr round. fairly obvious and took 2 days in total. (in campus). questions were from data structure and algorithms, operating system and database system.

1. there is an online test consist of 20 aptitude questions and 2 coding questions. 2. there are two tech interviews. In the interview, they generally asked about data structures and want me to give the optimal solution and they also want to know how I solve a particular question. 3 HR round consisting of basic questions about yourself.