java简易五子棋代码

以下是一个简单的 Java 五子棋代码示例：

import java.util.Scanner;

public class Gobang {
    private static int BOARD_SIZE = 15;
    private String[][] board = new String[BOARD_SIZE][BOARD_SIZE];

    public void initBoard() {
        for (int i = 0; i < BOARD_SIZE; i++) {
            for (int j = 0; j < BOARD_SIZE; j++) {
                board[i][j] = "+";
            }
        }
    }

    public void printBoard() {
        for (int i = 0; i < BOARD_SIZE; i++) {
            for (int j = 0; j < BOARD_SIZE; j++) {
                System.out.print(board[i][j]);
            }
            System.out.print("\n");
        }
    }

    public void play() {
        Scanner scanner = new Scanner(System.in);
        int x = 0, y = 0;
        String color = "x";
        boolean flag = true;
        while (flag) {
            System.out.println("请输入您的落子位置，格式为x,y：");
            x = scanner.nextInt();
            y = scanner.nextInt();
            if (x < 0 || x >= BOARD_SIZE || y < 0 || y >= BOARD_SIZE) {
                System.out.println("落子位置不合法，请重新输入！");
                continue;
            }
            if (!board[x][y].equals("+")) {
                System.out.println("该位置已经有子，请重新输入！");
                continue;
            }
            board[x][y] = color;
            printBoard();
            if (isWin(x, y)) {
                flag = false;
                System.out.println(color + "方获胜！");
            }
            color = color.equals("x") ? "o" : "x";
        }
        scanner.close();
    }

    public boolean isWin(int x, int y) {
        String color = board[x][y];
        int count = 1;
        // 判断横向
        for (int i = y - 1; i >= 0; i--) {
            if (board[x][i].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        for (int i = y + 1; i < BOARD_SIZE; i++) {
            if (board[x][i].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        } else {
            count = 1;
        }
        // 判断纵向
        for (int i = x - 1; i >= 0; i--) {
            if (board[i][y].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1; i < BOARD_SIZE; i++) {
            if (board[i][y].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        } else {
            count = 1;
        }
        // 判断左上右下
        for (int i = x - 1, j = y - 1; i >= 0 && j >= 0; i--, j--) {
            if (board[i][j].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1, j = y + 1; i < BOARD_SIZE && j < BOARD_SIZE; i++, j++) {
            if (board[i][j].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        } else {
            count = 1;
        }
        // 判断右上左下
        for (int i = x - 1, j = y + 1; i >= 0 && j < BOARD_SIZE; i--, j++) {
            if (board[i][j].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1, j = y - 1; i < BOARD_SIZE && j >= 0; i++, j--) {
            if (board[i][j].equals(color)) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        } else {
            return false;
        }
    }

    public static void main(String[] args) {
        Gobang gobang = new Gobang();
        gobang.initBoard();
        gobang.printBoard();
        gobang.play();
    }
}

该代码实现了一个简单的五子棋游戏，包括棋盘的初始化、输出、落子、判断胜负等功能。其中，isWin()方法用于判断是否获胜，通过遍历每一个方向上的棋子个数来实现。