Today I have attended one Interview.
Interviewer asked me to write two programs. I wrote .

Even I wrote it correctly, he did not convinced.

He has his own logic in his mind, he told me my programs are wrong.

How can I write the logic in his mind?
Every one had their own logic.

Wrost day in my life , I waited for that interview 10 hours. I felt very sad.

You probably don't want to work in this company anyway. Imagine this guy reviewing your code on a daily basis.

Yes true. @DeepSpace

Interviews are the worst. They suck for both sides involved: the interviewee has to try to sell themselves and convince the interviewer in an hour or so what they have learned from years of experience.

And the interviewer has to try to judge a prospect on the same tiny sample size.

Frankly I think the whole process is broken. Try not to take it too personally.

What do you mean you waited 10 hours?