int[] myArray;

int[] myArray = {1, 2, 3, 4};

int[] myArray = new int[4] {1, 2, 3, 4};

int[,] myArray = new int[2, 3];

int[,] myArray = {
{1, 2, 3},
{1, 2, 3}
};

myArray[0, 1]; // 2

int[][] myArray = new int[2][];

myArray[0] = new int[2] {1, 2};
myArray[1] = new int[3] {1, 2,3};

myArray[0][1]; // 2

myArray[0];

string[] myArray = {"alily", "swen", "ben", "cat"};
foreach (var value in myArray) {
  Console.Write(value); // alily, swen, ben, cat
}

// 当数组元素是值类型时，Clone()复制所有值
int[] intArray = {1, 2, 3};
int[] intArrayClone = (int[]) intArray.Clone(); // intArrayClone = {1, 2, 3}

// 当数组元素包含引用类型，则只复制引用
Person[] girl = {new Person{FirstName = "Sam", LastName = "Lennon"}, new Person{FirstName = "Ben", LastName = "Cartney"}};
Person[] girlClone = (Person[]) girl.Clone(); // girl和girlClone引用的Person对象是相同的，当修改girlClone中一个引用类型元素的属性时，也会改变girl中对应对象

int[] num =new int[] { 5,2,3,4,1 };

Array.Sort(num);

foreach(int i in num)

Console.WriteLine(i);

1

2

3

4

5

string a = "world";
string b = "hello";
int result = a.CompareTo(b); // 返回一个负数