Java 如何查找三维数组索引值
我知道三维(3D)阵列可以看作是阵列阵列的阵列。我有int[3][4][2]3Darray,我可以使用for循环初始化它 范例Java 如何查找三维数组索引值,java,arrays,Java,Arrays,我知道三维(3D)阵列可以看作是阵列阵列的阵列。我有int[3][4][2]3Darray,我可以使用for循环初始化它 范例 public class JavaProgram { public static void main(String args[]) { int arr[][][] = new int[3][4][2]; int i, j, k, num=1; for(i=0; i<
public class JavaProgram
{
public static void main(String args[])
{
int arr[][][] = new int[3][4][2];
int i, j, k, num=1;
for(i=0; i<3; i++)
{
for(j=0; j<4; j++)
{
for(k=0; k<2; k++)
{
arr[i][j][k] = num;
num++;
}
}
}
for(i=0; i<3; i++)
{
for(j=0; j<4; j++)
{
for(k=0; k<2; k++)
{
System.out.print("arr[" +i+ "][" +j+ "][" +k+ "] = " +arr[i][j][k]+ "\t");
}
System.out.println();
}
System.out.println();
}
}
}
我无法找出所有元素的位置,比如矩阵[0][0][0]=1。其他元素的索引值是多少。请任何人帮助我查找只需像在示例中一样迭代数组,但使用
长度
-属性:
int[][][] matrix = { { { 1, 2, 3 }, { 4, 5, 6 } }, { { 10, 20, 30 }, { 40, 50, 60 } } };
for (int i = 0; i < matrix.length; i++)
{
for (int j = 0; j < matrix[i].length; j++)
{
for (int k = 0; k < matrix[i][j].length; k++)
{
System.out.print("matrix[" + i + "][" + j + "][" + k + "] = " + matrix[i][j][k] + "\t");
}
System.out.println();
}
System.out.println();
}
int[][]矩阵={{{{1,2,3},{4,5,6},{{10,20,30},{40,50,60};
对于(int i=0;i
如果要访问特定元素,还可以使用length
确定哪个范围有效。
您可以找到更多信息。只需像在示例中一样迭代数组,但使用
length
-属性:
int[][][] matrix = { { { 1, 2, 3 }, { 4, 5, 6 } }, { { 10, 20, 30 }, { 40, 50, 60 } } };
for (int i = 0; i < matrix.length; i++)
{
for (int j = 0; j < matrix[i].length; j++)
{
for (int k = 0; k < matrix[i][j].length; k++)
{
System.out.print("matrix[" + i + "][" + j + "][" + k + "] = " + matrix[i][j][k] + "\t");
}
System.out.println();
}
System.out.println();
}
int[][]矩阵={{{{1,2,3},{4,5,6},{{10,20,30},{40,50,60};
对于(int i=0;i
如果要访问特定元素,还可以使用length
确定哪个范围有效。
您可以找到更多信息。这是您的阵列:
int[][][] matrix = { //-------------------Start of your first array contains two elements as 2D array.
{ //----------First element of First array, which contains two 1D array.
{ 1, 2, 3 }, //First element of 2D array.
{ 4, 5, 6 } //Second element of 2D array.
}, //First element of 3D array ends here.
{ // Second element of 3D array contains 2 1D array.
{ 10, 20, 30 },
{ 40, 50, 60 }
}
};
现在如果你想得到任何数字的位置,比如我想要20的位置:
for (int i = 0; i < matrix.length; i++)
{
for (int j = 0; j < matrix[i].length; j++)
{
for (int k = 0; k < matrix[i][j].length; k++)
{
System.out.print("[" + i + "][" + j + "][" + k + "] = " + matrix[i][j][k] + "\t");
}
System.out.println();
}
System.out.println();
}
for(int i=0;i
这是您的阵列:
int[][][] matrix = { //-------------------Start of your first array contains two elements as 2D array.
{ //----------First element of First array, which contains two 1D array.
{ 1, 2, 3 }, //First element of 2D array.
{ 4, 5, 6 } //Second element of 2D array.
}, //First element of 3D array ends here.
{ // Second element of 3D array contains 2 1D array.
{ 10, 20, 30 },
{ 40, 50, 60 }
}
};
现在如果你想得到任何数字的位置,比如我想要20的位置:
for (int i = 0; i < matrix.length; i++)
{
for (int j = 0; j < matrix[i].length; j++)
{
for (int k = 0; k < matrix[i][j].length; k++)
{
System.out.print("[" + i + "][" + j + "][" + k + "] = " + matrix[i][j][k] + "\t");
}
System.out.println();
}
System.out.println();
}
for(int i=0;i