定义

Array 是所有类型数组的基类

Array 类提供对数组操作的属性和方法

数组定义

三种方式

//数组定义方法1
string[] arrInfo = new string[] { "a", "b", "d", "k","e" };

//数组定义方法2
string[] arrInfo2 = { "a", "b", "d", "k", "e" };

//数组定义方法3
string[] arrInfo3 = new string[5];
arrInfo3[0] = "a";
arrInfo3[1] = "b";
arrInfo3[2] = "d";
arrInfo3[3] = "k";
arrInfo3[4] = "e";

数组倒排

使用Array.Reverse(arrInfo)

代码

//数组定义方法1
string[] arrInfo = new string[] { "a", "b", "d", "k","e" };
//对当前数组进行倒序
//数组倒排
Array.Reverse(arrInfo);
foreach (string s in arrInfo)
{
   Console.WriteLine(s);
}
//结果是
e k d b a 
arrInfo将变成以下的值 {"e","k","d","b","a"}

数组排序

Aarray.Sort(array)方法,将字符串按AscII方式从小到大进行排序

代码

Array.Sort(arrInfo);
foreach (string s in arrInfo)
{
   Console.WriteLine(s);
}
结果
{ "a", "b", "d", "e","k" };

整数型数组排序

int[] arrValue = { 10, 5, 20, 8 };
Array.Sort(arrValue);
foreach (int i in arrValue)
{
   Console.WriteLine(i);
}
结果：
{ 5, 8, 10, 20 };