Almost every job interview will involve strange questions, but only developers have to do programming exams as well. Here's one of the tests Australian taxi app developer goCatch uses to assess potential developers.
The first stage of the test consists of a Scala project with a set of missing functions; developers have to deduce what's missing and write functions to fit. The second combines programming with a mathematics challenge.
Practical skills testing is essential in many lines of work, and setting this challenge would make it easier for goCatch to weed out obviously unsuitable candidates. How do you think you'd fare?
Interview Problems for goCatch [GitHub]