Applied on the Yelp website, I was reached out by a recruiter the next day. We had a nice general phone screen; the recruiter asked about my work and project experience and introduced their company. It went well, then followed by an online coding challenge. The question was easy, but it was annoying to deal with stdin as the input. The reason I say it's annoying was because you have very limited time to solve the problem, while more than half of the time was spent on how to set up stdin correctly.

However, it's very interesting to solve a problem like that. I failed to figure out the configuration correctly with high time pressure.

Simple coding question