Random Capitals

randomCapitals.scala

object randomCapitals {
  def randomUpper(sentence: String) = {
    sentence.map(c => 
        if (math.random > .5) 
          c.toUpper 
        else 
          c.toLower)
  }

  def main(args: Array[String]) {
    args.foreach(s => print(randomUpper(s) + " "))
    println()
  }
}