we use this http://play.elevatorsaga.com/ because it's extremely easy to understand, is open to multiple solution and immediately sort out both who doesn't understand queues, priorities, closures but most importantly who has completely no empathy and win level pushing numbers instead of satisfying clients.
it also takes very little time to introduce and solve which is a plus since we prefer to give it out in-office. but we do tell the candidate beforehand that there will be a 15 coding challenge so they don't panic.
it also takes very little time to introduce and solve which is a plus since we prefer to give it out in-office. but we do tell the candidate beforehand that there will be a 15 coding challenge so they don't panic.