SenRa Software Engineer interview questions

Interview process includes three rounds, one written test and two technical interview. First Round (Written test): 100 marks written test of mcq which was purely based on data structure. Most of the question from tree and there were two coding question. To clear this round you should score more than 50. 80 students appeared in this round and 25 students got shortlisted. Second Round (face to face): First they asked about approach and time complexity of two coding question which was asked in round 1. Then he asked two and three more question of data structure and asked me to write and explain code and complexity of that code. I wrote every question with best complexity. Out of 25 students only 9 students got shortlisted for next round. Third Round (face to face): This round again was purely based on data structure and he asked me again a question of DS and told me to write code first by iterative and then recursively. In the last he asked me about Radix sort how it works and what is the time complexity of it. Finally out of 9 students only 2 students got selected and i was one of them.