public void TestPermutations()
        {
            IEnumerable <Sample> obvs = GetObvs();

            var ob = obvs.FirstOrDefault();

            var possiblities = DigitalClockSolver.GeneratePermutations(ob);

            Assert.AreEqual(10, possiblities.Count());
        }
        private IEnumerable <Sample> GetObvs()
        {
            string input = "3 71:57 71:57 71:07";

            return(DigitalClockSolver.ParseObservations(input));
        }