+1

I'm a newbie in Ruby and managed to answer this coding problem using a different solution. I just want to understand how the above answer is possible if anyone can explain please?

somehow my brain misses chars and map :p

The de-facto community style guide for Ruby suggests using parens if the method accepts paramters and leaving off the parens if the method takes no parameters.

Question: Is is idiomatic in ruby to leave off the parens around the method params?

Me Too

363ms

Bugger. Don't you hate when you have just 'high fived' yourself for an awesomely concise method then, boom!!

Needs more test cases and random test cases.

for ruby in test method has bad name