【C＃】正序、逆序、最大值、最小值和平均值

正序、逆序

输入用空格分隔的五个整数，分别输出正序、逆序、平均值和最大值。

首先输入整数

将长度为5，即可以输入五个整数，并用空格隔开

int[] myArray = new int[5]; string[] str =
Console.ReadLine().Split(’ ');

输出正序

Array.Sort(myArray);
Console.Write(“正序：”);
for (int i = 0; i < 5; i++)
{
Console.Write(myArray[i]);
if (i != 4) Console.Write(",");
sum += myArray[i];
}

输出逆序

Array.Reverse(myArray);
Console.Write(“逆序：”);
for (int i = 0; i < 5; i++)
{
Console.Write(myArray[i]);
if (i != 4) Console.Write(",");
}

输出平均数

double sum = 0;
double average;
for (int i = 0; i < 5; i++)
{

            sum += myArray[i];        }         average = sum / 5;         string strAverage = average.ToString("0.0");

输出最大值

int max; Array.Sort(myArray); max = myArray[4];

代码

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApp2{    class Program    {        static void Main(string[] args)        {            Console.WriteLine("请输入用空格分隔的5个整数：");            int[] myArray = new int[5];            string[] str = Console.ReadLine().Split(' ');            try            {                for (int i = 0; i < 5; i++)            {                myArray[i] = int.Parse(str[i]);            }            }            catch            {                Console.WriteLine("输入错误！");                return;            }                        double sum = 0;            double average;            int max;            Array.Sort(myArray);            Console.Write("正序：");            for (int i = 0; i < 5; i++)            {                Console.Write(myArray[i]);                if (i != 4) Console.Write(",");                sum += myArray[i];            }            max = myArray[4];            average = sum / 5;            string strAverage = average.ToString("0.0");            Console.WriteLine();            Array.Reverse(myArray);            Console.Write("逆序：");            for (int i = 0; i < 5; i++)            {                Console.Write(myArray[i]);                if (i != 4) Console.Write(",");            }            Console.WriteLine();            Console.WriteLine("平均值：" + strAverage);            Console.WriteLine("最大值：" + max);            Console.ReadKey();        }    }}

运行结果

最大值、最小值和平均值

代码

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApp5{    class Program    {        static void Main(string[] args)        {            double j = 1;            int[] arr = new int[100];            int sum = 0, maxl = 0, minl = 0;            Console.WriteLine("请输入数字，输入-1结束输入");            arr[0] = Int32.Parse(Console.ReadLine());            sum += arr[0];            maxl = arr[0];            minl = arr[0];            for (int i = 1; i < 100; i++)            {                arr[i] = Int32.Parse(Console.ReadLine());                if (arr[i] == -1)                {                    break;                }                sum += arr[i];                maxl = Math.Max(maxl, arr[i]);                minl = Math.Min(minl, arr[i]);                ++j;            }            double ave = (double)sum / j;            Console.WriteLine("最大值"+maxl);            Console.WriteLine("最小值"+minl);            Console.WriteLine("平均值"+ave);        }    }}

结果