Question

我正在尝试制作一个骑士游览程序，但是当我尝试从2d数组中的行/列中减去该板时，我就会在棋盘上移动。但我尝试做的每件事都不断尝试将电路板设置为-1而不是减去1.

有点难以解释问题是什么，但是如果有人可以帮助我在这里，我将非常感谢我的代码：

public class Knight1 {

    public static void main(String[] args) {
        int board[][] = new int[8][8];
        int horizontal[] = new int[8];
        int vertical[] = new int[8];

        horizontal[0] = 2;
        horizontal[1] = 1;
        horizontal[2] = -1;
        horizontal[3] = -2;
        horizontal[4] = -2;
        horizontal[5] = -1;
        horizontal[6] = 1;
        horizontal[7] = 2;

        vertical[0] = -1;
        vertical[1] = -2;
        vertical[2] = -2;
        vertical[3] = -1;
        vertical[4] = 1;
        vertical[5] = 2;
        vertical[6] = 2;
        vertical[7] = 1;
        int move = 1;

        int moveNumber = 0;
        int currentRow = 0;
        int currentCol = 0;
        int counter = 1;

        while (moveNumber != 7) {
            currentRow += vertical[moveNumber];
            currentCol += horizontal[moveNumber];
            board[currentRow][currentCol] = counter;
            moveNumber++;
            counter++;
        }

        for (int i = 0; i < 8; i++) {
            for (int j = 0; j < 8; j++) {
                System.out.print(board[i][j] + " ");
            }
            System.out.println();
        }
    }
}

Answer 1

问题出现在这一点上：

   int currentRow = 0;
   int currentCol = 0;

您正尝试将 -1 添加到 currentRow 变量

    vertical[0] = -1;
    currentRow += vertical[moveNumber];

我只看看Knight的巡演问题和你的代码。如果我正确地理解了它们，你应该从 ROW 7 和 COLUMN 4 开始。

所以只改变这两个变量：

    int currentRow = 7;
    int currentCol = 4;

它将编译此结果：

0 0 0 0 0 0 0 0 
0 0 0 0 4 0 0 0 
0 0 5 0 0 0 3 0 
0 0 0 0 0 0 0 0 
0 6 0 0 0 0 0 2 
0 0 0 0 0 0 0 0 
0 0 7 0 0 0 1 0 
0 0 0 0 0 0 0 0

我还稍微编辑了你的主要方法：您不需要水平和垂直数组。你可以使用多维数组来完成它。

public static void main(String[] args) {

        int board[][]  = new int[8][8];
        int moveNumber = 0;
        int currentRow = 7;
        int currentCol = 4;
        int counter    = 1;

        //moves[moveNumber][0] = columnValues;
        //moves[moveNumber][1] = rowValues;
        int moves[][] = new int[][]{{ 2,-1},
                                    { 1,-2},
                                    {-1,-2},
                                    {-2,-1},
                                    {-2, 1},
                                    {-1, 2},
                                    { 1, 2},
                                    { 2, 1}};

        while (moveNumber != 7) {
            currentCol += moves[moveNumber][0];
            currentRow += moves[moveNumber][1];
            board[currentRow][currentCol] = counter;
            moveNumber++;
            counter++;
        }

        for (int i = 0; i < 8; i++) {
            for (int j = 0; j < 8; j++) 
                System.out.print(board[i][j] + " ");
            System.out.println();
        }
    }

无法从2d数组的行/列中减去。[Java]

1 个答案: