static void Main(string[] args)
 { 
// sort ,Reverse 排序的应用举例
int[] intArr = { 1,4,2,3,99,34,22,16,8,100};
Console.WriteLine("原数组为：");
for (int i = 0; i < intArr.Length; i++)
{
 Console.Write(intArr.GetValue(i));
 Console.Write(" ");
}
Console.WriteLine();
Array.Sort(intArr); // 用来升序排序的函数；
Console.WriteLine("升序排序后的数组为：");
for (int i = 0; i < intArr.Length; i++)
{
 Console.Write(intArr.GetValue(i));
 Console.Write(" ");
}
Console.WriteLine();
Array.Reverse(intArr); // 用来降序排序的函数；
Console.WriteLine("降序排序后的数组为：");
for (int i = 0; i < intArr.Length; i++)
{
 Console.Write(intArr.GetValue(i));
 Console.Write(" ");
}

static void Main(string [] args)
 {
  int [] arrStuNum=new []{1,5,4,2,3};
  string [] arrStuName=new []{"小小","小赵","小薇","丹丹","小于"};
  Console.WriteLine("排序前的学生信息为：");
  for(int i=0;i<arrStuNum.Length;i++)
  {
 Console.WriteLine("{0}({1}) ",arrStuName[i],arrStuNum[i]);
  }

  Console.WriteLine("排序后的学生信息为：");
  Array.Sort(arrStuNum,arrStuName); // 注意： Reverse 没有这样的用法；
  for (int i = 0; i < arrStuNum.Length; i++)
  {
 Console.WriteLine("{0}({1}) ", arrStuName[i], arrStuNum[i]);
  }
Console.Read();
 }