Scala collections library covers pretty much everything you can think of, usually in a concise manner a la Ruby, Python, etc.

scala> Random.shuffle(List(1,2,3)) res7: List[Int] = List(2, 3, 1)

Scala-Android google group may be of interest: https://groups.google.com/forum/#!forum/scala-on-android

Obviously I've been converted to the static side, only client-side remains dynamic for me at present, and that's only because there's not yet a statically typed Coffeescript-like language available.