数组：一组包含相同类型的变量值。(这里以int类型为例)
源文件
一维数组：
声明，创建, 初始化和输出。
//一维数组 //1.声明一个 int[] array1 = new int[8]; foreach (int item in array1) { Console.Write(" " + item); } Console.WriteLine(); //2. int[] array2; array2 = new int[8]; foreach (int item in array2) { Console.Write(" " + item); } Console.WriteLine(); //3.声明多个 int[] array3 = new int[8], array4 = new int[8]; foreach (int item in array4) { Console.Write(" " + item); } Console.WriteLine(); //4.初始化 int[] array5 = { 1, 2, 3, 4, 5, 6, 7, 8 }; foreach (int item in array5) { Console.Write(" " + item); } Console.WriteLine(); //5. for (int i = 0; i < array3.Length; i++) { array3[i] = i; Console.Write(" " + array3[i]); } Console.WriteLine(); //6. int j = 0; foreach (int item in array1) { array1[item] = ++j; Console.Write(" " + array1[item]); } Console.WriteLine(); //7.隐式类型初始化数组 var array6 = new[] { 1, 2, 3, 4, 5, 6, 7, 8 }; foreach (int item in array6) { Console.Write(" " + item); } Console.WriteLine(); //8. int[] array7; array7 = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 }; foreach (int item in array7) { Console.Write(" " + item); } Console.WriteLine(); 二（多）维数组：
声明，创建, 初始化和输出。
矩形数组
注意：矩形数组的每一行要长度相同，否则会出现错误。
//矩形数组 //1. int[,] array8 = { { 1, 2, 3, 4 }, { 5, 6, 7, 8 } };//两行四列 //2. int[,] array9 = new int[2, 3]; for (int i = 0; i < array9.GetLength(0); i++) { for (int j = 0; j < array9.GetLength(1); j++) { //array9[i][j] = j;//错误！！！ array9[i, j] = j; Console.Write(" " + array9[i, j]); } Console.WriteLine(); } Console.WriteLine(); //3. int[,] array10; array10 = new int[3, 4]; //4. int[,] array11 = new int[,] { { 1, 2, 3, 4}, { 5, 6, 7, 8 } }; //错误！！！矩形数组不能用foreach. //foreach (int row in array11) //{ // foreach (int col in row) // { // Console.Write(" " + col); // } //} foreach (int i in array11) { for (int j = 0; j < array11.GetLength(1); j++) { //array11[i, j] = j; Console.Write(" " + i); } Console.WriteLine(); } Console.WriteLine(); //5. int[,] array12 = new[,] { { 1, 2, 3, 4 }, { 5, 6, 7, 8 } }; for (int i = 0; i < array12.GetLength(0); i++) { foreach (int j in array12) { //array11[i, j] = j; Console.Write(" " + j); } Console.WriteLine(); } Console.WriteLine(); 齿状数组
//齿状数组 //1. //int[][] array13=new int[2][3];//错误！！！ //2. int[][] array14 ={ new int[] { 1}, new int[] { 1,2}, new int[] { 1,2,3}};// foreach (int[] row in array14) { foreach (int col in row) { Console.Write(" " + col); } Console.WriteLine(); } //3. int[][] array15; array15 = new int[3][];//创建3行 array15[0] = new int[1]; array15[1] = new int[2]; array15[2] = new int[3]; foreach (var row in array14) { foreach (int col in row) { row[col - 1] = col; Console.Write(" " + row[col - 1]); } Console.WriteLine(); } //4. int[][] array16; array16 = new int[3][]; array16[0] = new int[] { 1 }; array16[1] = new int[] { 1, 2 }; array16[2] = new int[] { 1, 2, 3 }; for (int i = 0; i < array16.Length; i++) { for (int j = 0; j < array16[i].Length; j++) { // array16[i, j] = j;//错误！！！ Console.Write(" " + array16[i][j]); } Console.WriteLine(); } for (int i = 0; i < array16.Length; i++) { foreach (var item in array16[i]) { Console.Write(" " + item); } Console.WriteLine(); } foreach (int[]/*var*/ item in array16) { for (int i = 0; i
