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