Tips to interviewer

1. Rather giving problem and expecting optimal answer at the first time. Try to analyze how the person is solving the problem.

2. Give enough time to the person while solving a problem rather telling "Oh. I am already running out of time. Can you please do it soon." "Can you please explain this in 2 minutes in detail as I don't have much time".

3. Don't keep something in your mind and expect the person to think in the same way.Remember, it is very rare that a person thinks/understands in the same way as you do.

If none of them are satisfied, I call that the person is not fit for interviewing.