Scala_for_impatients_Ch3

def randNum(n:Int):Array[Int] = {
  val a = scala.util.Random
  val b = new Array[Int](n)
  for(i <- 0 until b.length) {
    b(i) = a.nextInt(n)
  }
  b
}

val n = 10
println(randNum(n).mkString(" "))