DEKA Research and Development Software Developer interview questions

Applied and got a call really soon and was asked to give dates for interview within a week. I was scheduled sooner as well. There were two people interviewing and they were really friendly. Had some questions on c++ and memory management. After that few puzzle type questions were asked

It's more like a software architecture interview where you're given a problem and you have to design a solution for it. There's a project manager whose friendly and pleasant to talk to and the software team which is very professional. Overall they're seeing if you're a good fit and design code from scratch