Samsung Electronics Software Developer interview questions

Interviewer asked some basic coding and OS related questions. He asked me some puzzles. If you prepare the data structure well,You will be able to clear the interview. The HR round was just formality. The HR asked basic question about my team work ability and all.

I applied online through a hiring agency and got shortlisted to appear for online coding test held by Samsung itself. There was one coding question to be solved(could only be solved if you can implement algorithms and DS) to be solved in 3hr.