public static void Main(string[] args)
        {
            Strategy strategyA = new ConcreteStrategyA();
            Strategy strategyB = new ConcreteStrategyB();
            Strategy strategyC = new ConcreteStrategyC();

            Context context = new Context(strategyA);

            context.AlgorithmImplement();

            context = new Context(strategyB);
            context.AlgorithmImplement();

            context = new Context(strategyC);
            context.AlgorithmImplement();

            Console.Read();
        }