如果你有表格、矩阵、网格形状的日期,那么多维数组就很有用。我们通过在方括号中添加逗号来声明多维数组。我们可以以这种方式分别声明二维、三维、四维数组 [,]、[、][、、]。
C 语言中的多维数组#
C# 中带有变量的功能:
一维数组声明:
一维可以通过以下符号来声明。
一维数组声明:示例
dataType[] arrayName;
// Declare an integer array named NumIntArray
int[] NumIntArray;
// Declare a double array named NumDoubleArray
double[] NumDoubleArray;
// Declare a string array named NumStringArray
string[] NumStringArray;
二维数组声明:
二维可以通过以下 sytax 来声明。
二维数组声明:示例
dataType[,] arrayName;
// Later in code, initialize the array with specific values
arrayName = new dataType[rowCount, columnCount];
// A 2D-Array can be declare in following syntax
int[,] 2DIntNumArray = {
{21, 22},
{23, 24},
{25, 26}
};
三维数组声明:
三维可以通过以下符号来声明。
三维数组声明:示例
dataType[,,] arrayName = new dataType[size1, size2, size3];
int[,,] 3IntNumArray = new int[3, 4, 2];
一维数组初始化:
一维可以通过以下 sytax 进行初始化。
一维数组初始化:示例
// Syntax for declaring and initializing an array with specific values
dataType[] arrayName = { value1, value2, ..., valueN };
// Initialize an integer array
int[] 1DIntNumArray = { 1, 2, 3, 4, 5 };
// Initialize a string array
string[] 1DStringArray = { "apple", "banana", "orange" };
二维数组初始化:
二维可以通过以下 sytax 进行初始化。
二维数组初始化:示例
// Syntax for declaring and initializing a two-dimensional array with specific values
dataType[,] arrayName = {
{ value11, value12, ..., value1N },
{ value21, value22, ..., value2N },
// ... additional rows
};
// Declare and initialize a 2D integer array
int[,] 2DIntNumArray = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
三维数组初始化:
三维可以通过以下 sytax 进行初始化。
三维数组初始化:示例
int[,,] 3DIntOneArray =
{
{ {1, 2}, {3, 4}, {5, 6}, {7, 8} },
{ {9, 10}, {11, 12}, {13, 14}, {15, 16} },
{ {17, 18}, {19, 20}, {21, 22}, {23, 24} }
};
一维数组访问:
一维可以通过以下符号来访问。
一维数组访问:示例
dataType[] arrayName;
//Here is syntax of accessing elements
dataType element = arrayName[index];
//Here we declared and initialized an integer array
int[] 1DIntNumArray = { 23, 43, 53, 63, 73 };
//Here is the code of accessing elements
int firstElement = 1DIntNumArray [0]; //Here we are accessing the first element (index 0)
int thirdElement = 1DIntNumArray [2]; //Here we are accessing the third element (index 2)
二维数组访问:
可以通过以下 sytax 来访问二维。
二维数组访问:示例
// A 2D-Array can be declared and initialized in the following way
int[,] 2DIntNumArray = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
// A 2D-Array elements can be accessed in the following way
int element1 = 2DIntNumArray [0, 0]; // Here we are accessing the element at row 0, column 0
int element2 = 2DIntNumArray [1, 2]; // Here we are accessing the element at row 1, column 2
三维阵列访问:
三维数组可以通过以下 sytax 来访问。
三维数组访问:示例
int[,,] 3DIntNumArray = new int[3, 4, 2];
int[,,] 3DElementArray =
{
{ {1, 2}, {3, 4}, {5, 6}, {7, 8} },
{ {9, 10}, {11, 12}, {13, 14}, {15, 16} },
{ {17, 18}, {19, 20}, {21, 22}, {23, 24} }
};
// Here we are accessing elements of the array
int element1 = 3DElementArray [1, 2, 0];
int element2 = 3DElementArray [0, 3, 1];
一维数组迭代:
一维可以通过遵循下面的 sytax 进行迭代。
一维数组迭代:示例
// Here below we have declared and initialized 1D Array
int[] 1DIntNumArray = { 10, 20, 30, 40, 50 };
// Here below we are iterating on loop using 1D array
for (int i = 0; i < 1DIntNumArray.Length; i++)
{
Console.WriteLine("Element Of One Dimensional Array at index " + i + ": " + 1DIntNumArray[i]);
}
二维数组迭代:
A 二维可以通过遵循下面的 sytax 进行迭代。
二维数组迭代:示例
// Here we are declared and initialized 2D Array
int[,] 2DIntNumArray = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
//Here we are iterating on 2D array using nested for loop
for (int i = 0; i < 2DIntNumArray.GetLength(0); i++)
{
for (int j = 0; j < 2DIntNumArray.GetLength(1); j++)
{
Console.Write(2DIntNumArray[i, j] + " ");
}
Console.WriteLine(); // Move to the next row
}
三维数组迭代:
A 三维可以通过遵循下面的 sytax 进行迭代。
三维数组迭代:示例
int[,,] 3DIntNumArray = new int[3, 4, 2];
// Here we accessing element of 3D Array
for (int s = 0; s < 3; s++)
{
for (int y = 0; y < 4; y++)
{
for (int m = 0; m < 2; m++)
{
3DIntNumArray[s, y, m] = s + y + m;
}
}
}
一维数组修改:
一维可以通过遵循下面的 sytax 进行修改。
一维数组修改:示例
// Here we declared and initialized 1D Array
int[] 1DIntNumArray = { 1, 2, 3, 4, 5 };
// Here we are modifying element at index 2 of 1D array
1DIntNumArray[2] = 35;
二维阵列修改:
二维可以通过以下符号进行修改。
二维数组修改:示例
// Here we have declared and initialized 2D array
int[,] 2DIntNumDArray = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
2DIntNumDArray[1, 2] = 10;
三维阵列修改:
A 三维可以通过以下符号进行修改。
三维数组修改:示例
int[,,] 3DIntNumArray = new int[3, 4, 2];
int[,,] 3DIntNumArray =
{
{ {1, 2}, {3, 4}, {5, 6}, {7, 8} },
{ {9, 10}, {11, 12}, {13, 14}, {15, 16} },
{ {17, 18}, {19, 20}, {21, 22}, {23, 24} }
};
//Here we are modifying an element in the array
3DIntNumArray[1, 2, 0] = 999;
一维数组长度:
一维数组的长度可以通过遵循下面的 sytax 来获得。
一维数组长度:示例
// Here we declared and initialized 1D Array
int[] 1DIntNumArray = { 10, 20, 30, 40, 50 };
// Here we are getting the size of 1D Array
int size = 1DIntNumArray.Length;
二维数组长度:
二维数组的长度可以通过遵循下面的 sytax 来获得。
二维数组长度:示例
// Here we have declared and initialized 2D Array
int[,] 2DIntNumArray = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
// Here are are getting the size of 2D Array With rows and column
int numRows = 2DIntNumArray.GetLength(0); // Number of rows
int numCols = 2DIntNumArray.GetLength(1); // Number of column
三维阵列长度:
三维数组的长度可以通过遵循下面的 sytax 来获得。
三维数组长度:示例
int[,,] 3DIntNumArray = new int[3, 4, 2];
int[,,] 3DIntNumArray =
{
{ {1, 2}, {3, 4}, {5, 6}, {7, 8} },
{ {9, 10}, {11, 12}, {13, 14}, {15, 16} },
{ {17, 18}, {19, 20}, {21, 22}, {23, 24} }
};
3DIntNumArray.GetLength(0);
3DIntNumArray.GetLength(1)
3DIntNumArray.GetLength(2)
C# 中的多维数组与示例
using System;
public class Program
{
public static void Main(string[] args)
{
int[,] mangoPrices = { {10, 11 ,12}, {20, 21,22}, {30, 31,32} }; //declaration and initialization
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
Console.Write(mangoPrices[i,j]+" ");
}
Console.WriteLine();//new line at each row
}
}
}
输出
10 11 12
20 21 22
30 31 32
如果你正在制作程序、游戏、软件或矩阵进行数学运算,那么你可以使用多维数组。
该文章在 2024/8/19 10:26:42 编辑过