我如何在二维字符串数组中交换字符串的位置

Question

我有功课来制作自定义版本的6x6的国际象棋，棋子以特定的方式移动。但是现在，我试图弄清楚如何选择一块并将其放置在我已设置的2d数组内的另一个位置并交换字符的位置。现在，我有：

public class Chess {

    static final int rows = 7;
    static final int columns = 7;

    public static void main(String[] args) {
        String[][] board = new String[rows][columns];
        fillBoard(board);
        enterMove();
    }
    public static void fillBoard(String[][] board){
        for (int row = 0; row < 7; row++) {
            for (int col = 0; col < 7; col++) {
                board[row][col] = " X ";
                outerShell(board);
                pawns(board);
                System.out.print(board[row][col]);
            }
            System.out.println();
        }
    }
    public static void outerShell(String[][] board){
        board[0][0] = "   ";
        board[0][1] = " A ";
        board[0][2] = " B ";
        board[0][3] = " C ";
        board[0][4] = " D ";
        board[0][5] = " E ";
        board[0][6] = " F ";
        board[1][0] = " 6 ";
        board[2][0] = " 5 ";
        board[3][0] = " 4 ";
        board[4][0] = " 3 ";
        board[5][0] = " 2 ";
        board[6][0] = " 1 ";
    }
    public static void pawns(String[][] board){
        //whitePawns
        board[1][1] = "wDw";
        board[1][2] = " wD";
        board[1][3] = " wQ";
        board[1][4] = " wK";
        board[1][5] = " wM";
        board[1][6] = " wDw ";
        //blackPawns
        board[6][1] = "bDw";
        board[6][2] = " bM";
        board[6][3] = " bK";
        board[6][4] = " bQ";
        board[6][5] = " bD";
        board[6][6] = " bDw";
    }
    public static void enterMove(){
        System.out.println("");
        System.out.println("Select the piece you want to move(Example a1) if you want to quit enter: q");
        Scanner gameInput  = new Scanner(System.in);
        String pieceSelect = gameInput.nextLine();
        if(pieceSelect.equals("q")){
            System.exit(0);
        }
        switch (pieceSelect){
            case "a1": 

        }
        System.out.println(" ");
        System.out.println("Now select a finishing position for the piece to move to");
        String piecePlace = gameInput.nextLine();
        switch (piecePlace){
            case "a2": 
        }
    }
}

在enterMove()部分中，我试图用switch来做，但是不知道如何交换数组中的两个位置。我不确定使用switch，因为我不确定是否可能。如果有人可以编写此代码的版本，则通过输入特定坐标（如a1）选择bDw，然后输入另一个坐标并将bDw与X交换，我正在将其用作空白指示符，并在可能的情况下使用解释一下，我将不胜感激。

Answer 1

我以前制作过象棋程序，以前将所有棋子存储在一个数组中（这里是6x6数组），我使用索引值作为棋盘坐标。因此，在选择一块时，会调用一个函数来显示所选块的有效移动。

有效的移动可以存储在某个数组中并可以进行检查。然后只需交换数组本身内的值即可。