public void SampleTest5()
 {//3,4 // 0,1,2
     Assert.That(CatAndDog.Solve(new List <char> {
         'C', 'C', 'C', 'D', 'D'
     }, 2), Is.EqualTo(2));
 }
 public void SampleTest6()
 {
     Assert.That(CatAndDog.Solve(new List <char> {
         'C', 'C', 'C', 'D', 'D'
     }, 1), Is.EqualTo(1));
 }
 public void SampleTest2()
 {//2,3,5 //0,1,4
     Assert.That(CatAndDog.Solve(new List <char> {
         'C', 'C', 'D', 'D', 'C', 'D'
     }, 1), Is.EqualTo(2));
 }