Scala example source code file (sort2.scala)

This example Scala source code file (sort2.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, array, int, int, list, list

The Scala sort2.scala source code

package examples

object sort2 {

  def sort(a: List[Int]): List[Int] = {
    if (a.length < 2)
      a
    else {
      val pivot = a(a.length / 2)
      def lePivot(x: Int) = x < pivot
      def gtPivot(x: Int) = x > pivot
      def eqPivot(x: Int) = x == pivot
      sort(a filter lePivot) :::
           sort(a filter eqPivot) :::
           sort(a filter gtPivot)
    }
  }

  def main(args: Array[String]) {
    val xs = List(6, 2, 8, 5, 1)
    println(xs)
    println(sort(xs))
  }

}