java实现数独游戏

以下是一个简单的 Java 数独游戏实现：

import java.util.Scanner;

public class SudokuGame {
    private int[][] board;

    public SudokuGame() {
        board = new int[9][9];
    }

    public void play() {
        Scanner scanner = new Scanner(System.in);

        while (!isComplete()) {
            printBoard();
            System.out.print("Enter row: ");
            int row = scanner.nextInt();
            System.out.print("Enter column: ");
            int col = scanner.nextInt();
            System.out.print("Enter value: ");
            int val = scanner.nextInt();
            if (isValidMove(row, col, val)) {
                board[row][col] = val;
            } else {
                System.out.println("Invalid move, try again.");
            }
        }

        System.out.println("Congratulations, you won!");
        printBoard();
    }

    private boolean isComplete() {
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {
                if (board[i][j] == 0) {
                    return false;
                }
            }
        }
        return true;
    }

    private boolean isValidMove(int row, int col, int val) {
        if (row < 0 || row > 8 || col < 0 || col > 8 || val < 1 || val > 9) {
            return false;
        }

        // Check row and column
        for (int i = 0; i < 9; i++) {
            if (board[i][col] == val || board[row][i] == val) {
                return false;
            }
        }

        // Check 3x3 box
        int boxRow = row / 3 * 3;
        int boxCol = col / 3 * 3;
        for (int i = boxRow; i < boxRow + 3; i++) {
            for (int j = boxCol; j < boxCol + 3; j++) {
                if (board[i][j] == val) {
                    return false;
                }
            }
        }

        return true;
    }

    private void printBoard() {
        System.out.println(" -----------------------");
        for (int i = 0; i < 9; i++) {
            System.out.print("| ");
            for (int j = 0; j < 9; j++) {
                System.out.print(board[i][j] == 0 ? " " : board[i][j]);
                System.out.print(' ');
                if (j % 3 == 2) {
                    System.out.print("| ");
                }
            }
            System.out.println();
            if (i % 3 == 2) {
                System.out.println(" -----------------------");
            }
        }
    }

    public static void main(String[] args) {
        SudokuGame game = new SudokuGame();
        game.play();
    }
}

这个实现使用一个 `9x9` 的二维数组来表示数独棋盘，其中 `0` 表示空格。`play()` 方法循环接受用户输入的行、列和值，并在输入合法时更新棋盘。`isComplete()` 方法检查棋盘是否已经完成，即是否所有空格都已经填写。`isValidMove()` 方法检查给定的行、列和值是否符合数独规则。`printBoard()` 方法打印当前的棋盘状态。

在 `main()` 方法中创建一个 `SudokuGame` 对象并调用 `play()` 方法开始游戏。