They give a requirement I have to write the code , this has to complete around 10 days. After that they schedule a Telephonic interview. He asked me below question. I gave all answer except the last one I have been not much sure then he just spend half an hour on this . He should be move to next question. Although he ask above question in between of this discussion but at last he come on thos question. Its my observation after giving this interview that he previously made mind that I will not select. This was my life worst interview impression. I have gave & take so much interview in my life some of them I clear some of them I was not able to clear. But I don't feel such experience. Now I feel their should be two people in interview panel. Hope this will help you guys.