Lecture 5.2 - Pairs and Tuples (10:45)
In video quiz
08:24 / 10:45

The merge function as given uses a nested pattern match. This does not
reflect the inherent symmetry of the merge algorithm. Rewrite merge
using a pattern matching over pairs.

  def merge(xs: List[Int], ys: List[Int]): List[Int] =
    (xs, ys) match {
      ???
    }