ダブり文字列並べ替えロジック Scala版

SortWords.scala

object SortWords {

  def main(args: Array[String]): Unit = {
    val list = args.toList sort (_ > _)
    val foldList = (List((1, list.head)) /: list.tail) {
      case (x, y) if (x.head._2 == y) => (x.head._1 + 1, x.head._2) :: x.tail
      case (x, y) => (1, y) :: x
    }
    val result = foldList sort ((a, b) => a._1 > b._1 || a._1 == b._1 && a._2 < b._2) map (_._2)
    println(result)
  }
}