So far this week we’ve had a pair of related posts at the DailyProgrammer subreddit1:
- [02/24/14] Challenge #149 [Easy] Disemvoweler
- [02/26/14] Challenge #150 [Intermediate] Re-emvoweler 1
Basically, if you’re given a string with vowels, take them out. If you’re given one without vowels, put them back in. One of the two is certainly easier than the other2.