Aufgabe 6

• a)

def decodeTuple: ((Char, Int)) => Stream[Char] = {
  case (c, count) if count > 0 => c #:: decodeTuple((c, count - 1))
  case (c, count) => Stream.Empty
}

• b)

def decode: Stream[(Char, Int)] => Stream[Char] = {
  case Stream.Empty => Stream.Empty
  case ts => {
    decodeTuple(ts.head) #::: decode(ts.tail)
  }
}