.NET :如何对数组进行排序

这些天仍然在讲数据结构方面的课程，关于数组的排序问题，下面是一个简单的范例

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ArraySample
{
///
/// 这个例子程序是用来演示对数组的排序，自定义排序，和利用linq语法进行处理
/// 作者：陈希章
///

class Program
{
static void Main(string[] args)
{
int[] numbers = new[] { 1, 3, 7, 45, 3, 9, 0, 2 };
Console.WriteLine("原始数组");
PrintArray(numbers);
Console.WriteLine("升序排列");
Array.Sort(numbers);//默认为升序
PrintArray(numbers);

Console.WriteLine("自定义排序");
Array.Sort(numbers, new MyComparer());
PrintArray(numbers);

Console.WriteLine("利用LINQ进行排序");
var query = from n in numbers
orderby n descending
select n;

PrintArray(query);

Console.Read();
}

static void PrintArray(IEnumerable arr) {

foreach (var item in arr)
{
Console.Write(item);
Console.Write(" ");
}
Console.WriteLine();
}
}

///
/// 自定义的比较器，实现降序排列
///
///
class MyComparer : IComparer
where T : IComparable
{

#region IComparer 成员

public int Compare(T x, T y)
{
return -x.CompareTo(y);
}

#endregion
}
}

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