Yelp has a three-step interview process. Luckily for me, I was able to get through only two of those steps.

In the first step, a Yelp recruiter called me and asked some basic CS and logic questions, like how many bits are in a byte and such, along with some Linux-related questions already mentioned.

Then, the second step is a Skype interview with a Yelp software engineer. They decide if you are good enough for on-site interviews, which is the third step. Sadly, I was not picked for the third step.

Given a string of N letters long, find the longest palindrome in that string.