简单红包算法

static void Main(string[] args)
        {
           
            int a = 10; //数组长度
            int b = 0;  //小数位数
            int min = 5; //最小数
            int max = 20; //最大数
            decimal[] arr = new decimal[a];
            decimal sum = 150;
            decimal num = 0;
            Random random = new Random();
            for (int i = 0; i < a; i++)
            {
                arr[i] = random.Next(min,max);
                num += arr[i];
                //Console.WriteLine(arr[i]);

               //Console.WriteLine(Math.Round(arr[i],2));


            }
            for (int i = 0; i < a; i++)
            {
                arr[i] = sum / num * arr[i];
                Console.WriteLine(Math.Round(arr[i], b));
            }

            //foreach (var item in arr)
            //{

            //}


            Console.ReadKey();
        }