private static void  TestForForeach(int count)
        {
            double[] test=new double[count];
            for(int i=0;i<count;i++)
            {
                test[i]=i;
            }
        
            double sum1=0;

            DateTime start=DateTime.Now;
            foreach(double k in test)
            {
                sum1+=k;
            }
            DateTime end=DateTime.Now;

            Console.WriteLine("TestForForeach2->\nForeach:开始时间{0},结束时间{1},\n相差:{2}",start,end,end-start);

        
            sum1=0.0;

            start=DateTime.Now;
            for(int i=0;i<count;i++)
            {
                sum1+=test[i];
            }
            end=DateTime.Now;

            Console.WriteLine("TestForForeach2->\nFor:开始时间{0},结束时间{1},\n相差:{2}",start,end,end-start);
        }

        private static void  TestForForeach1(int count)
        {
            double[] test=new double[count];
            for(int i=0;i<count;i++)
            {
                test[i]=i;
            }
        
            double sum1=0;

            DateTime start=DateTime.Now;
            for(int i=0;i<count;i++)
            {
                sum1+=test[i];
            }
            DateTime end=DateTime.Now;

            Console.WriteLine("TestForForeach1->\nFor:开始时间{0},结束时间{1},\n相差:{2}",start,end,end-start);

        
            sum1=0.0;

            start=DateTime.Now;
            foreach(double k in test)
            {
                sum1+=k;
            }
            end=DateTime.Now;

            Console.WriteLine("TestForForeach1->\nForeach:开始时间{0},结束时间{1},\n相差:{2}",start,end,end-start);
        }