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数组是对相同类型的一组数据的封装。数组定义的时候，要说明是对哪一种类型的封装，并且要指定长度。
我要评论 1 using system;
2 using system.collections.generic;
3 using system.linq;
4 using system.text;
5
6 namespace testarraylist
7 {
8 class program
9 {
10 static void main(string[] args)
11 {
12 //system.array
13 //1、数组[]特定类型、固定长度
14 string[] str1 = new string[3];
15 str1[0] = "a";
16 str1[1] = "b";
17 str1[2] = "c";
18 console.writeline(str1[2]);
19
20 string[] str2 = new string[] { "a", "b", "c" };
21 console.writeline(str2[0]);
22
23 string[] str3 = { "a", "b", "c" };
24 console.writeline(str3[0]);
25
26 //2.二维数组
27 //int[,] intarray = new int
28 int[,] intarray = new int[2, 3];
29 intarray[0, 0] = 1;
30 intarray[0, 1] = 11;
31 intarray[0, 2] = 111;
32 intarray[1, 0] = 2;
33 intarray[1, 1] = 22;
34 intarray[1, 2] = 222;
35 console.writeline("{0},{1},{2}", intarray[0, 0], intarray[0, 1], intarray[0, 2]);
36 console.writeline("{0},{1},{2}", intarray[1, 0], intarray[1, 1], intarray[1, 2]);
37
38 //3多维数组
39 int[, ,] intarray1 = new int[,,]
40 {
41 {{1,1},{11,11},{111,111}},
42 {{2,2},{22,22},{33,33}},
43 {{3,3},{33,33},{333,333}}
44 };
45 console.writeline("多维数组");
46 console.writeline("{0},{1},{2},{3},{4},{5}", intarray1[0, 0, 0], intarray1[0, 0, 1], intarray1[0, 1, 0], intarray1[0, 1, 1], intarray1[0, 2, 0], intarray1[0, 2, 1]);
47 console.writeline("{0},{1},{2},{3}", intarray1[1, 0, 0], intarray1[1, 0, 1], intarray1[1, 1, 0], intarray1[1, 1, 1]);
48 console.writeline("{0},{1},{2},{3},{4},{5}", intarray1[2, 0, 0], intarray1[2, 0, 1], intarray1[2, 1, 0], intarray1[2, 1, 1], intarray1[2, 2, 0], intarray1[2, 2, 1]);
49
50 //4交错数组即数组的数组
51 int[][] intarray2 = new int[4][];
52 intarray2[0] = new int[] { 1 };
53 intarray2[1] = new int[] { 2, 22 };
54 intarray2[2] = new int[] { 3, 33, 333 };
55 intarray2[3] = new int[] { 4, 44, 444, 4444 };
56 console.writeline("交错数组");
57 for (int i = 0; i < intarray2.length; i++)
58 {
59 for (int j = 0; j < intarray2[i].length; j++)
60 {
61 console.writeline("{0}", intarray2[i][j]);
62 }
63 }
64 console.readkey();
65 int[] myintarray = new int[5] { 1, 2, 3, 4, 5 };
66 object[] myobjarray = new object[5] { 26, 27, 28, 29, 30 };
67 console.writeline("initially,");
68 console.write("integer array:");
69 printvalues(myintarray);
70 console.write("object array: ");
71 printvalues(myobjarray);
72
73 system.array.copy(myintarray, myobjarray, 2);
74
75 console.writeline("\n after copying the first two elements of the integer array to the object array.");
76 console.write("integer array:");
77 printvalues(myintarray);
78 console.write("object array: ");
79 printvalues(myobjarray);
80
81 system.array.copy(myobjarray, myobjarray.getupperbound(0) - 1, myintarray, myintarray.getupperbound(0) - 1, 2);
82
83 console.writeline("\nafter copying the last two elements of the object array to the integer array,");
84 console.write("integer array:");
85 printvalues(myintarray);
86 console.write("object array:");
87 printvalues(myobjarray);
88 console.readkey();
89 }
90
91 public static void printvalues(object[] myarr)
92 {
93 foreach (object i in myarr)
94 {
95 console.write("\t{0}", i);
96 }
97 console.writeline();
98 }
99
100 public static void printvalues(int[] myarr)
101 {
102 foreach (int i in myarr)
103 {
104 console.write("\t{0}", i);
105 }
106 console.writeline();
107 }
108 }
109 }
运行结果如下：
数组是一种数据类型，并且二维数组在图像处理中会应用。一维数组的起始下标是[0]。二维数组的起始下标是[0,0]。交错也称参差数组的起始下标是[0][0]。
数组一定是固定长度和类型确定并且有序的，这种呆板的数据类型，导致它的insert，非常不方便，于是有了arraylist
那么c#中数组是引用类型？还是值类型？c#中数组是引用类型，为什么是引用类型，依据是什么？
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