OYO Senior Android Engineer interview questions

It was an average interview with 4 rounds, 1st was on DS and Algo, i was askes 2 questions and 1 puzzle. 2nd and 3rd was on android in depth. 4th was with AVP basically to test your business sense. The only negative thing is the HR, they won't bother informing you about the result, I was told to wait for 2-3days for the final update, which i did, but there was no response from HR hence assuming they didnt shortlisted me.