6)) List(Vector(1, 1), Vector(3, 3), Vector(4), Vector(2, 2), Vector(5),Vector(6)) @tailrec def groupRuns[A](c: Seq[A], acc: Seq[Seq[A]] = Seq.empty): Seq[Seq[A]] = { c match { case Seq() => acc case xs => val (same, rest) = xs.span { _ == xs.head } groupRuns(rest, acc :+ same) } } Tuesday, June 11, 13