I was contacted by a recruiter and given a coding challenge.

At the same time, they scheduled two back-to-back phone screens.

I completed the coding challenge, but it seemed to have no impact on the recruiting process because I had already scheduled an interview.

The interview was fairly difficult for me as a new programmer, and the interviewer was not very friendly.

He seemed annoyed and impatient with me as I struggled with the questions.

Given a file of numbers and words, find a phone number quickly.