Worst interview processes. I applied for the post of Senior Software Developer through LinkedIn.

I received an email for a telephone interview. During the telephone interview, I was asked to traverse a binary tree vertically. I answered it correctly, and the interviewer seemed satisfied.

After two days, I received a rejection email. I don't know on what grounds they rejected me. The only thing I can think of is that I needed visa sponsorship.

If you cannot provide visa sponsorship, please do not initiate the interview process.

Transverse a binary tree vertically.