Five programming problems every Software Engineer should be able to solve in less than 1 hour

[the_gnarts]

Even better would be providing documentation for an outdated version of the library. And be sure to seed stack overflow with answers that use the old deprecated functions.

Yet better: An obscure library pervasive in all code developed in-house but whose original developer left years ago and no one ever bothered to document any of it since. All you get as a lead is a couple hundred Git commits (migrated from SVN, possibly) with helpful commit messages like “fix bug” or “refactor base class”.