I was contacted through email to do a phone interview with my prospective employer. The phone interview consisted mostly of me describing projects and experience in the technical field, with no actual technical questions. After the phone interview, I was contacted by a representative to do an on-site interview. The on-site interview consisted of three separate interviews: two technical and one non-technical. After the interviews, I was contacted two weeks later with an offer letter.

How do you stay up to date in programming and software development?

You are hosting a party with 1000 bottles of wine and 10 servants. However, one of the bottles has been poisoned. How do you determine, using the servants, which bottle of wine is poisoned?

You have three covered jars of marbles, each labeled incorrectly. One is labeled black, one is labeled white, and the other is labeled mixed. Picking only one marble from one jar, how do you determine the correct labeling?

Write a method to traverse a binary tree in level-order.