BubbleSort.scala

def bubbleSort(arr: Array[Int]): Array[Int] = {
  for(i <- 0 until arr.length - 1; j <- 0 until arr.length - 1 - i) {
    if (arr(j) > arr (j + 1)) {
      val temp = arr(j)
      arr(j) = arr(j + 1)
      arr(j + 1) = temp
    }
  }
  arr
}
bubbleSort(Array(5,3,2,6,1,8)) foreach println