C#控制台应用，添加数组并排序。

int[] ageArray = { 28, 76, 38,67,45,18 };
ArrayList al = new ArrayList();

//添加整型数组ageArray的元素到数组列表 al


 Console.WriteLine("数组列表的元素有：");
foreach (object m in al)
{
Console.WriteLine(m);
}

//移除数组列表al中索引值为2的元素
//对数组列表al进行降序排列


Console.WriteLine("降序后数组列表");
foreach (object m in al)
{
 Console.WriteLine(m);
}

using System;
using System.Collections;
using System.Linq;

public class Test
{
    public static void Main()
    {
        int[] ageArray = { 28, 76, 38,67,45,18 };
        ArrayList al = new ArrayList();
        foreach (int x in ageArray)
        {
            al.Add(x);
        }
        Console.WriteLine("数组列表的元素有：");
        foreach (object m in al)
        {
            Console.WriteLine(m);
        }
        al.RemoveAt(2);
        Console.WriteLine("降序后数组列表");
        foreach (object m in al.OfType<int>().OrderByDescending(x => x))
        {
            Console.WriteLine(m);
        }
    }
}

数组列表的元素有：
28
76
38
67
45
18
降序后数组列表
76
67
45
28
18