fillMax.scala

  def fillMax(values: Vector): DenseVector = {
    val result: Array = values.copy.toArray

    val max: Double = result.filter(!_.isNaN).max

    finalresult = result.map(x => isNan(x))

    def isNan(a: Double): Double = a.isNaN match {
      case true => max
      case _ => a
    }

    new DenseVector(finalResult)
  }