public void Test3()
 {
     Assert.AreEqual(988744322, DescendingOrderSolution.DescendingOrder(782498423));
 }
 public void Test1()
 {
     Assert.AreEqual(65321, DescendingOrderSolution.DescendingOrder(12356));
 }
 public void Test2()
 {
     Assert.AreEqual(55554443, DescendingOrderSolution.DescendingOrder(54545543));
 }
 public void Test0()
 {
     Assert.AreEqual(0, DescendingOrderSolution.DescendingOrder(0));
 }