[英]Iterate through a 3d array?
I'm coding a Sudoku solver and my teacher recommended that I use a 3d array and since I've never used 3d arrays; 我正在编写数独求解器,我的老师建议我使用3d数组,因为我从未使用过3d数组。 I'm having trouble figuring out how to create a loop to iterate through the rows and one through the columns.
我在弄清楚如何创建循环遍历行和遍历列的过程时遇到了麻烦。 How would you go about doing this?
您将如何去做?
Edit: I figured out how to iterate through every third column/row and hopefully I should be able to do the other six eventually, but am I heading in the right direction? 编辑:我想出了如何遍历每三列/行,希望最终我应该能够完成其他六列/行,但是我是否朝着正确的方向前进?
int[][][] = board[9][3][3];
public boolean columnCheck(int[][][] board)
{
boolean filled = false;
for(int i = 0; i < board.length; i++)
{
for(int j = 0; j < board[0].length; j++)
{
System.out.println(board[i][j][0]);
}
}
return true;
}
public boolean rowCheck(int[][][] board)
{
boolean filled = false;
for(int i = 0; i < board.length; i++)
{
for(int j = 0; j < board[0].length; j++)
{
System.out.println(board[i][0][j]);
}
}
return true;
You can use 3 for
loops to iterate through a 3D array, eg: 您可以使用3
for
循环遍历3D数组,例如:
public static void main(String[] args) throws FileNotFoundException {
int[][][] array = new int[9][3][3];
for(int i=0 ; i<array.length ; i++){
for(int j=0 ; j<array[i].length ; j++){
for(int k=0 ; k<array[i][j].length ; k++){
System.out.println("[" + i + "][" + j + "][" + k + "]:" + array[i][j][k]);
}
}
}
}
However, for sudoku game, you don't need a 3D array. 但是,对于数独游戏,您不需要3D阵列。 2D array would suffice.
2D阵列就足够了。
public class Main {
public static void main(String[] args) {
int[][][] board = new int[3][3][9];
// Assume that first parameter is row
// The second is column
// Iterating through first row (board[0])
for (int i = 0; i < 3; i++) {
// i is col number
for (int j = 0; j < 9; j++) {
//j is block number
System.out.println(board[0][i][j]);
}
}
// Iterating through second column
for (int i = 0; i < 3; i++) {
// i is row number
for (int j = 0; j < 9; j++) {
// j is block number
System.out.println(board[i][1][j]);
}
}
}
}
I suppose that your 3d array represents the sudoku as follows: The '9' stands for the 9 small 3x3 blocks. 我想您的3d数组按如下方式表示数独:“ 9”代表9个小的3x3块。 The first '3' for each row of the block and the second '3' for the columns of each block.
块的每一行的第一个“ 3”,每个块的列的第二个“ 3”。
That would give the following: 这将给出以下内容:
array[0][x][y] | array[1][x][y] | array[2][x][y]
----------------------------------------------------
array[3][x][y] | array[4][x][y] | array[5][x][y]
----------------------------------------------------
array[6][x][y] | array[7][x][y] | array[8][x][y]
To iterate over each row you can do the following: 要遍历每一行,您可以执行以下操作:
// The first three rows
// You can probably figure out yourself how to do the last 6,
// and how to combine those 3 seperate sections
for (int i=0; i<3; i++) {
for (int j=0; j<3; j++) {
for (int k=0; j<3; k++) {
System.out.println(array[j][i][k]);
}
}
}
// The first three columns
for (int i=0; i<3; i++) {
for (int j=0; j<7; j+=3) {
for (int k=0; k<3; k++) {
System.out.println(array[j][k][i]);
}
}
}
I hope this will get you going, without solving it all for you. 我希望这会让您前进,而不会为您解决所有问题。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.