Great, clean solution!

Use single quote.

good solution

This probably runs in O(nlog(n)) time. Faster (and much less elegant) solutions exist.

Didn't know that hashes could be manipulated that way!

I personnaly prefer map/reduce because its how I learned the concept, from big data map/reduce

It never gets added. The way join works is it just joins the elements using the given character, doesn't append after each one.

http://www.ruby-doc.org/core-2.1.2/Array.html#method-i-join

looks good, but I'm not sure I can
read where in the code, the final
comma gets chopped off. Hmmm.

Incorrectly converts THE-STEALTH-WARRIOR into THESTEALTHWARRIOR instead of into TheStealthWarrior

Good for beginners (like me) to learn this.

As far as I can see, all these answers are incorrect. The question asks us to produce a set of numbers that as nearly as possible add up to 100.0. To y knowledge, the only way to do this is to calculate percentages for all but one number, and then to calculate the last as 100-sum(others). Otherwise minor floating point inaccuracies will accumulate across all the answers.

Dave

I meant it was unclear what h._one = 2 should do. Does it store as h[:one] or h["one"]?

If you do update the tests, you should probably also update the description. It's not clear what kind of key h._one = 2 should use.

As for checking the type-I believe your comment is incorrect. There is nothing to check. :)

Agreed...