PTC Intern interview questions

There are 3 rounds of interview. In the first round they asked me all OOPS concepts and 1 coding questions. Q was Reverse the array. Then they said we will announce the result of 1st round and i cleared and appeared for 2nd intw round. 1st was taken by their team and 2nd was by their senior members and 3rd by HR. In 2nd round, there were 2 people. And the questions from the projects and database and connectivity.