java初學（七）井字棋

1. 有bug——可以在同一位置下棋子
2. 有bug——輸入的可以不是0或1
3. 可以用算法優化——不一定需要下完9顆棋子才能夠判斷輸贏

package cn;

import java.util.Arrays;
import java.util.Scanner;

public class Chess {
    public static boolean check(int board[][],int player) {
        for (int i = 0; i < 3; i++) {
            //檢查行 列 對角線
            if ((board[i][0] == player && board[i][1] == player && board[i][2] == player) || (board[0][i] == player && board[1][i] == player && board[2][i] == player) || (board[0][0] == player && board[1][1] == player && board[2][2] == player) || (board[0][2] == player && board[1][1] == player && board[2][0] == player)) {
                return true;
            }
        }
        return false;
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[][] board = {
                {-1, -1, -1},
                {-1, -1, -1},
                {-1, -1, -1}
        };
        int round = 0;//下的次數 最大隻能是九次
        int x, y;
        boolean player1Win = false;
        boolean player2Win = false;
        for (int[] ints : board) {
            System.out.println(Arrays.toString(ints));
        }
        while (!player1Win && !player2Win && round != 9) {
            System.out.println("請輸入玩家一（0）要下的位置");
            x = sc.nextInt();
            y = sc.nextInt();
            board[x][y] = 0;
            round++;
            player1Win = check(board, 0);
            if (!player1Win && round != 9) {
                System.out.println("請輸入玩家二（1）要下的位置");
                x = sc.nextInt();
                y = sc.nextInt();
                board[x][y] = 1;
                round++;
                player2Win = check(board, 1);
            }
            for (int[] ints : board) {
                System.out.println(Arrays.toString(ints));
            }
        }
        if (player1Win) {
            System.out.println("Player1 is winner");
        } else if (player2Win) {
            System.out.println("Player2 is winner");
        } else {
            System.out.println("Player1 draws with Player2");
        }
    }
}