private static void Josephus(int size, int steps = 1, int survivors = 1)
        {
            var circle = new CircularList <int>();

            foreach (int i in Enumerable.Range(1, size))
            {
                circle.Add(i);
            }

            // Start the circus!
            int counter = 0;

            while (circle.Count > survivors)
            {
                circle.Step(steps);
                circle.RemoveCurrent();
                counter++;
            }

            Console.WriteLine($"{survivors} survivor(s) after {counter} steps:");
            Console.WriteLine(string.Join(", ", circle.ToArray()));
        }
        private static void CircularListdemo()
        {
            var circle = new CircularList <int>();

            foreach (int i in Enumerable.Range(1, 5))
            {
                circle.Add(i);
            }

            Console.WriteLine("Starting circle:");
            Console.WriteLine(string.Join(", ", circle.ToArray()));
            Console.WriteLine($"Current: {circle.Current.Value}");

            Console.WriteLine("Advancing 3 steps");
            circle.Step(3);
            Console.WriteLine($"Current: {circle.Current.Value}");
            Console.WriteLine("Removing current");
            circle.RemoveCurrent();
            Console.WriteLine($"Current: {circle.Current.Value}");

            Console.WriteLine("Current circle:");
            Console.WriteLine(string.Join(", ", circle.ToArray()));
        }