Java中的Tic-Tac-Toe AI极大极小函数

public class TicTacToeAI {
    private static final int MAX_SCORE = 1000;
    private static final int MIN_SCORE = -1000;

    public int miniMax(Board board, Player currentPlayer, int depth) {
        if (board.isGameOver() || depth == 0) {
            return evaluate(board);
        }

        if (currentPlayer == Player.MAX) {
            int maxScore = MIN_SCORE;
            for (int move : board.getAvailableMoves()) {
                board.makeMove(move, currentPlayer);
                int score = miniMax(board, Player.MIN, depth - 1);
                board.undoMove(move);
                maxScore = Math.max(maxScore, score);
            }
            return maxScore;
        } else {
            int minScore = MAX_SCORE;
            for (int move : board.getAvailableMoves()) {
                board.makeMove(move, currentPlayer);
                int score = miniMax(board, Player.MAX, depth - 1);
                board.undoMove(move);
                minScore = Math.min(minScore, score);
            }
            return minScore;
        }
    }

    public int findBestMove(Board board, int depth) {
        int bestScore = MIN_SCORE;
        int bestMove = -1;
        for (int move : board.getAvailableMoves()) {
            board.makeMove(move, Player.MAX);
            int score = miniMax(board, Player.MIN, depth - 1);
            board.undoMove(move);
            if (score > bestScore) {
                bestScore = score;
                bestMove = move;
            }
        }
        return bestMove;
    }

    private int evaluate(Board board) {
        // 实现评估函数来评估当前游戏状态的得分
        // 返回正数表示极大方赢，负数表示极小方赢，0表示平局
    }

    private enum Player {
        MAX, MIN
    }
}

public class Board {
    // 实现井字棋游戏的棋盘状态和相关操作方法
    // 包括判断游戏是否结束、获取可用的下一步走法、执行走法、撤销走法等
}