A recruiter contacted me via LinkedIn and scheduled a phone interview a couple of weeks later. The phone interview was conducted well, in my opinion. They asked several questions, ranging from math to coding details, and I answered them all well. However, I did not receive an offer. When I checked with the recruiter, I was told she could not share the results with me.

I feel they are already pre-determined if they want you or not based on the school you graduated from. If you did not graduate from a "decent" school, forget about it. It's a waste of time.

Remove duplicate lines from a large text.

Some tricky parts of a hashmap.