Phone screening was super easy, and the person interviewing me was very friendly. She said the next step was an online coding exam on ProctorU, and it was the same exam everyone has to take (full-time as well).

My entire experience with ProctorU was awful, from not being able to get up to go to the bathroom without raising red flags to my technical difficulties that locked my exam for 30 minutes to an hour.

The questions themselves started easy but quickly became very difficult and time-consuming. I do not remember specifics, though, as it was about six months ago.

Something along the lines of: If each finger on your hand is numbered 0-9, and each finger has certain keys on a keyboard associated with it, write code that, when given a string of digits such as "3251", prints out all strings that can be typed with each of those fingers typing a letter in that order. For example, in the string above, print all possible strings that can be typed from the 3rd finger typing a letter, then the second, then the 5th, and lastly the first.