gistfile1.scala

Array("Good luck in the Facebook Hacker Cup this year!",
      "Ignore punctuation, please :)",
      "Sometimes test cases are hard to make up.",
      "So I just go consult Professor Dalves")
      .filter(_.length > 0)
      .map(process)
      .foreach(println)

      def process(line:String) = {
        val cleanedLine = "[^a-z]*".r.replaceAllIn(line.toLowerCase, "")
         
        cleanedLine.toCharArray
                   .groupBy(identity)
                   .map(x => (x._1, x._2.length))
                   .toSeq
                   .sortWith(_._2 > _._2)
                   .map(_._2)
                   .zip(26 to 1 by -1)
                   .foldLeft(0)((sum, next) => sum + next._1 * next._2)
      }