C# 数组Array

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。

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;

 namespace TestArrayList
 {
     class Program
     {
         static void Main(string[] args)
         {
             //System.Array
             //1、数组[]特定类型、固定长度
             string[] str1 = new string[];
             str1[] = "a";
             str1[] = "b";
             str1[] = "c";
             Console.WriteLine(str1[]);

             string[] str2 = new string[] { "a", "b", "c" };
             Console.WriteLine(str2[]);

             string[] str3 = { "a", "b", "c" };
             Console.WriteLine(str3[]);

             //2.二维数组
             //int[,] intArray = new int
             int[,] intArray = new int[, ];
             intArray[, ] = ;
             intArray[, ] = ;
             intArray[, ] = ;
             intArray[, ] = ;
             intArray[, ] = ;
             intArray[, ] = ;
             Console.WriteLine("{0},{1},{2}", intArray[, ], intArray[, ], intArray[, ]);
             Console.WriteLine("{0},{1},{2}", intArray[, ], intArray[, ], intArray[, ]);

             //3多维数组
             int[, ,] intArray1 = new int[,,]
             {
                {{,},{,},{,}},
                {{,},{,},{,}},
                {{,},{,},{,}}
             };
             Console.WriteLine("多维数组");
             Console.WriteLine("{0},{1},{2},{3},{4},{5}", intArray1[, , ], intArray1[, , ], intArray1[, , ], intArray1[, , ], intArray1[, , ], intArray1[, , ]);
             Console.WriteLine("{0},{1},{2},{3}", intArray1[, , ], intArray1[, , ], intArray1[, , ], intArray1[, , ]);
             Console.WriteLine("{0},{1},{2},{3},{4},{5}", intArray1[, , ], intArray1[, , ], intArray1[, , ], intArray1[, , ], intArray1[, , ], intArray1[, , ]);

             //4交错数组即数组的数组
             int[][] intArray2 = new int[][];
             intArray2[] = new int[] {  };
             intArray2[] = new int[] { ,  };
             intArray2[] = new int[] { , ,  };
             intArray2[] = new int[] { , , ,  };
             Console.WriteLine("交错数组");
             for (int i = ; i < intArray2.Length; i++)
             {
                 for (int j = ; j < intArray2[i].Length; j++)
                 {
                     Console.WriteLine("{0}", intArray2[i][j]);
                 }
             }
             Console.ReadKey();
             int[] myIntArray = new int[] { , , , ,  };
             Object[] myObjArray = new Object[] { , , , ,  };
             Console.WriteLine("Initially,");
             Console.Write("integer array:");
             PrintValues(myIntArray);
             Console.Write("Object array: ");
             PrintValues(myObjArray);

             System.Array.Copy(myIntArray, myObjArray, );

             Console.WriteLine("\n After copying the first two elements of the integer array to the Object array.");
             Console.Write("integer array:");
             PrintValues(myIntArray);
             Console.Write("Object array: ");
             PrintValues(myObjArray);

             System.Array.Copy(myObjArray, myObjArray.GetUpperBound() - , myIntArray, myIntArray.GetUpperBound() - , );

             Console.WriteLine("\nAfter copying the last two elements of the object array to the integer array,");
             Console.Write("integer array:");
             PrintValues(myIntArray);
             Console.Write("Object array:");
             PrintValues(myObjArray);
             Console.ReadKey();
         }

         public static void PrintValues(Object[] myArr)
         {
             foreach (Object i in myArr)
             {
                 Console.Write("\t{0}", i);
             }
             Console.WriteLine();
         }

         public static void PrintValues(int[] myArr)
         {
             foreach (int i in myArr)
             {
                 Console.Write("\t{0}", i);
             }
             Console.WriteLine();
         }
     }
 }

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？