I applied for an intern position over the summer.

I had no complaints about anything leading up to the interview process. The people on the other side of the emails seemed nice and organized my interview very professionally.

Then came the interview. At that point, I was told to implement a rather easy question: finding the missing number in an array.

The problem was so basic, but I had some serious trouble because I was told to use a Mac (at which point some of the Windows hotkeys I accidentally pressed closed the text editor) and I was told to use Emacs, which I consider the worst text editor in existence.

Find the missing number in an array of adjacent, increasing numbers in logarithmic time.