Tuebora Software Engineer interview questions

There were 3-4 rounds depends upon candidate performance in previous rounds. I had 3 rounds. First Round/; Written Test ( 1 hrs): - total 20 questions( 4 output questions from DS, 5 Coading Questions(3 avg + 2 difficult), 5 DataBase theory + SQL, 3 Puzzles, 3 DS theory Second Round: Implementation Round, For me they gave one question to implement in 2 hrs. It was on String. Reverse a string based on delimiter(s). If more than one delimiter is given then consider all. I did using Java in 30 minutes only. Third Round: It was with Founder. General discussion on previous work, skills, why startup ? salary ? etc.