【年少的风】棋盘覆盖，用不同的颜色标记

 

import java.awt.Color;
import java.awt.Container;
import java.awt.GridLayout;
import java.util.Random;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;


public class ChessPaneCover {

    private final static int n = 4;
    static JButton[] button = new JButton[n*n];
    private static int amount = 0;
    static int[][] board = new int [n*n][n*n];
    static Color[] color = {Color.white,Color.pink,Color.blue,Color.CYAN,Color.green,Color.orange};

    public static void main(String[] args) {
        new ChessPaneCover().frameLaunch();
    }

    public static void frameLaunch(){
        JFrame frame = new JFrame("残缺棋盘覆盖");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(n*150, n*150);
        frame.setLocation(100,100);

        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(n,n,0,0));
        for (int i = 0; i < n*n; i++) {
            button[i] = new JButton();
            button[i].setBackground(Color.gray);
            panel.add(button[i]);
        }

        Random random = new Random();
        int temp = random.nextInt(16);
        cover(0,0,temp/n,temp%n,n);
        outputBoard(n);
        button[temp].setText("残");
        button[temp].setBackground(Color.black);

        frame.add(panel);
        frame.setResizable(false);
        frame.setVisible(true);
    }

    public static void cover(int tr, int tc, int dr, int dc, int size) {
        int s,t;
        if(size < 2){
            return;
        }
        amount++;
        t = amount;
        s = size/2;

        if(dr < tr + s && dc < tc + s){
            cover(tr,tc,dr,dc,s);
            board[tr + s - 1][tc + s] = t;
            board[tr + s][tc + s - 1] = t;
            board[tr + s][tc + s] = t;
            cover(tr, tc+s, tr+s-1, tc+s, s);
            cover(tr+s, tc, tr+s, tc+s-1, s);
            cover(tr+s, tc+s, tr+s, tc+s, s);
        }
        else if(dr < tr + s && dc >= tc + s){
            cover(tr,tc+s,dr,dc,s);
            board[tr + s - 1][tc + s - 1] = t;
            board[tr + s][tc + s - 1] = t;
            board[tr + s][tc + s] = t;
            cover(tr, tc, tr+s, tc+s-1, s);
            cover(tr+s, tc, tr+s, tc+s-1, s);
            cover(tr+s, tc+s, tr+s, tc+s, s);
        }
        else if(dr >= tr + s && dc < tc + s){
            cover(tr+s,tc,dr,dc,s);
            board[tr + s - 1][tc + s - 1] = t;
            board[tr + s - 1][tc + s] = t;
            board[tr + s][tc + s] = t;
            cover(tr, tc, tr+s-1, tc+s - 1, s);
            cover(tr, tc+s, tr+s-1, tc+s, s);
            cover(tr+s, tc+s, tr+s, tc+s, s);
        }
        else if(dr >= tr + s && dc >= tc + s){
            cover(tr+s,tc+s,dr,dc,s);
            board[tr + s - 1][tc + s -1] = t;
            board[tr + s - 1][tc + s] = t;
            board[tr + s][tc + s - 1] = t;
            cover(tr, tc, tr+s-1, tc+s-1, s);
            cover(tr, tc+s, tr+s-1, tc+s-1, s);
            cover(tr+s, tc+s, tr+s, tc+s-1, s);
        }
    }

    public static void outputBoard(int size){
        for(int i = 0; i < size; i++){
            for(int j = 0; j < size; j++){
                button[i*n+j].setBackground(color[board[i][j]]);
                button[i*n+j].setText("" + board[i][j]);
            }
        }
    }
}