PTC interview questions

3 hours long, two interviewers . First, asked technical questions in C and C++ like implementing binary tree structures and creating function for them and finding bugs in codes. In addition, finding a loop in linked list. Second, asked riddles to see how you think.

The interview technical round ended within 15-20 mins that's too less. They asked basic questions like I was a fresher and they didn't seem to be very much interested in taking interview and looked like they already knew whom to hire.