Java 自动下棋

爱被打了一巴掌 2022-05-25 22:49 115阅读 0赞

学习 Java 写的代码片段增加熟练度。

第一步定义一个棋盘（这里用二维数组)和棋盘大小

//初始化棋盘
        public void initBoard() {
            board = new String[BOARD_SIZE][BOARD_SIZE];
            for (int i = 0; i < board.length; i++) {
    //            String[] itemArg = board[i];
                for (int j = 0; j < board.length; j++) {
                    board[i][j] = "┼";
                }
            }
        }
        //打印棋盘
        public void printData() {
            System.out.println("------start-----");
            for (int i = 0; i < board.length; i++) {
                for (String item :
                        board[i]) {
                    System.out.print(item);
                }
                System.out.println();//一行结束换行打印
            }
            System.out.print("-------end-------");
            System.out.print("\n\n\n\n");
        }

随机获取棋子的位置 小棋盘大小用到Math.random(), do\{\}while(boolean);

Math.random() \* 5  随机出来的结果是从 0 - 5 的浮点类型

do\{\}while(boolean); 先执行代码块，在判断条件 ture 继续循环 false 结束循环。

//随机获取出棋子位置（x,y）
    private int[] getPosition(ArrayList<int[]> historyPosition) {
        int[] p = new int[2];
        do {
            p[0] = (int) (Math.random() * BOARD_SIZE);//[0,5)
            p[1] = (int) (Math.random() * BOARD_SIZE);
        } while (dataRepeat(p, historyPosition));//判断当前位置是否已有棋子
        return p;
    }

判断当前位置是否有棋子用到 for each\{\}

//当前位置已有棋子重新获取
    private boolean dataRepeat(int[] positionBoard, ArrayList<int[]> hpArg) {
        boolean repeat = false;
        for (int[] hp:
             hpArg) {
            repeat = Arrays.equals(positionBoard, hp);
            if(repeat)
                return repeat;
        }
        return repeat;
    }

全部代码

class Gobang {
        //定义棋盘大小
        private static int BOARD_SIZE = 5;
        //定义一个二维数组
        private static String[][] board;
        //初始化棋盘
        public void initBoard() {
            board = new String[BOARD_SIZE][BOARD_SIZE];
            for (int i = 0; i < board.length; i++) {
    //            String[] itemArg = board[i];
                for (int j = 0; j < board.length; j++) {
                    board[i][j] = "┼";
                }
            }
        }
        //打印棋盘
        public void printData() {
            System.out.println("------start-----");
            for (int i = 0; i < board.length; i++) {
                for (String item :
                        board[i]) {
                    System.out.print(item);
                }
                System.out.println();//一行结束换行打印
            }
            System.out.print("-------end-------");
            System.out.print("\n\n\n\n");
        }
    
        public static void main(String[] arg) {
            Gobang gobang = new Gobang();
            gobang.initBoard();
            gobang.printData();
            gobang.startRandomPosition();
    
        }
        //开始下棋
        public void startRandomPosition() {
            int label = 0;
            //记录已经有棋子的位置
            ArrayList<int[]> historyPosition = new ArrayList<>();
            String[] boardChild = {
      "●", "○"};//黑白棋子
            int[] positionBlack;
            do {
                positionBlack = getPosition(historyPosition);
                board[positionBlack[0]][positionBlack[1]] = boardChild[label % 2];//获取棋子黑白交替获取
                System.out.println(Arrays.toString(positionBlack) + boardChild[label % 2] + (label % 2 == 0 ? "黑子" : "白子"));
                printData();
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                historyPosition.add(positionBlack);//记录位置
                label++; //交换棋子
            } while (historyPosition.size() < BOARD_SIZE * BOARD_SIZE);
    
        }
    
        //当前位置已有棋子重新获取
        private boolean dataRepeat(int[] positionBoard, ArrayList<int[]> hpArg) {
            boolean repeat = false;
            for (int[] hp:
                 hpArg) {
                repeat = Arrays.equals(positionBoard, hp);
                if(repeat)
                    return repeat;
            }
            return repeat;
        }
        //随机获取出棋子位置（x,y）
        private int[] getPosition(ArrayList<int[]> historyPosition) {
            int[] p = new int[2];
            do {
                p[0] = (int) (Math.random() * BOARD_SIZE);
                p[1] = (int) (Math.random() * BOARD_SIZE);
            } while (dataRepeat(p, historyPosition));
            return p;
        }
    }