I know this is late to the party, but I would much rather read clear and concise solutions over 10-12 lines than an overly complicated one-liner that gives anyone but the author a headache to look at (though this soluion is nice I think, not hating). Solving a problem in 1-3 lines can be cool and elegant, or it can be messy as hell. Case in point is my solution to this task, which passed the tests but is just horrendous and fills me with shame.

Don't worry, it will come.... Solving many more katas from 8kyu and 7kyu to fully understand the basics and learning from the solutions other users provided (the comments are very helpful too), helped me a lot. I'm now somewhat satisfied with some of the solutions I´m providing (only some, but I still hope). Practice, practice, practice :)