Recursion made simple

gistfile1.scala

// Recursion made simple
  val dataset = List(5, 4, 3, 1, 8, 7) // dataset to use in below examples
  // using inline bag
  val firstResult = dataset.foldLeft((Int.MinValue, Int.MaxValue)) { case ((max, min), elem) =>
    if (elem > max) (elem, min)
    else if (elem < min) (max, elem)
    else (max, min)
  }
  println(firstResult)
  // using outside bag for better mantainability
  case class Bag(max: Int = Int.MinValue, min: Int = Int.MaxValue)
  val secondResult = dataset.foldLeft(Bag()) { case (bag, elem) =>
    if (elem > bag.max) bag.copy(max = elem)
    else if (elem < bag.min) bag.copy(min = elem)
    else bag
  }
  println(secondResult)