C＃如何打印/显示数组中所有数字与平均值之间的“差”

debugcn 发表于 Dev

托卡

我是C＃的新手，正在尝试学习数组的概念。在我的程序中，我想显示数组中所有数字与平均值之间的差异。我只设法在数组中打印出具有差异的1个元素（数字）。

如果尝试运行我的程序，它将分为3部分。最后一部分是我被困住的地方。它只打印数组的last（19th）元素/差异，而不是所有Elements。

欢迎任何提示:)（仅供参考，我尚未学习方法/函数的概念。）

static void Main(string[] args)
        {
            int[] Elements = new int[20]; // this creates/declares an integer array with 20 Elements

            double avg = 0, sum = 0, diff = 0; // declare average variable


            for (int i = 0; i < Elements.Length; i++) // this is a loop to show the random numbers of elements
            {
                int Element = i; // declare the Element variable

                Random rn = new Random();
                int numbers = rn.Next(0, 200); // creates a number between 0 and 200

                Console.WriteLine("Element {0} is {1}", Element, numbers); // print values

                sum += numbers; // calculate the sum of numbers
                avg = sum / Elements.Length; // calculate average of the sum

                if (avg > numbers) // calculate diffrence
                {
                    diff = avg - numbers;
                }
                else
                {
                    diff = numbers - avg;
                }

                if (Element == 19)
                {
                    Console.WriteLine("\n");
                    Console.WriteLine("The average is: {0}", avg);
                    Console.WriteLine("\n");

                    for (int z = 0; z < Elements.Length; z++)
                    {
                        Console.WriteLine("Diffrence between Element {0} and average is: {1}", Element, Math.Abs(diff));
                    }
                }
            }
            Console.ReadKey();
        }

安德鲁·亚瑟

我确保将数字添加到数组中。
Random实例的创建应在数组之外，否则生成的数字将不是随机的。

调整了最后一个循环。

     int[] Elements = new int[20]; // this creates/declares an integer array with 20 Elements

     double avg = 0, sum = 0, diff = 0; // declare average variable

     Random rn = new Random();

     for (int i = 0; i < Elements.Length; i++) // this is a loop to show the random numbers of elements
     {
         int Element = i; // declare the Element variable

         int numbers = rn.Next(0, 200); // creates a number between 0 and 200

         Console.WriteLine("Element {0} is {1}", Element, numbers); // print values

         Elements[Element] = numbers;

         sum += numbers; // calculate the sum of numbers
         avg = sum / Elements.Length; // calculate average of the sum                            
     }

     Console.WriteLine("\n");
     Console.WriteLine("The average is: {0}", avg);
     Console.WriteLine("\n");

     for (int z = 0; z < Elements.Length; z++)
     {
         diff = Elements[z] - avg;
         Console.WriteLine("Diffrence between Element {0} and average is: {1}", z, Math.Abs(diff));
     }
     Console.ReadKey();

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