java解决棋盘覆盖问题

/**

*

*/

package com.chessboard;

/**

* @author Administrator

*

*/

public class ChessBoard {

/**

* @param args

*/

final static int board_size = 4;

static int tial = 1;

static int [][]board = new int [board_size][board_size];

static void chessBoard(int tr,int tc,int dr,int dc,int size) {

if(size == 1)

return;

int s = size/2 ;

//System.out.println(s);

int t = tial++;

if(dr<tr+s && dc<tc+s) {//特殊方格在左上角棋盘中

chessBoard(tr,tc,dr,dc,s);

} else {//特殊方格不在此，则设置右下角方格为特殊方格

board[tr+s-1][tc+s-1] = t;

chessBoard(tr,tc,tr+s-1,tc+s-1,s);

}

if(dr<tr+s && dc>=tc+s) {//特殊方格在右上角棋盘中

chessBoard(tr,tc+s,dr,dc,s);

} else {//特殊方格不在此，则设置左下角方格为特殊方格

board[tr+s-1][tc+s] = t;

chessBoard(tr,tc+s,tr+s-1,tc+s,s);

}

if(dr>=tr+s && dc<tc+s) {//特殊方格在左下角棋盘中

chessBoard(tr+s,tc,dr,dc,s);

} else {//特殊方格不在此，则设置右上角方格为特殊方格

board[tr+s][tc+s-1] = t;

chessBoard(tr+s,tc,tr+s,tc+s-1,s);

}

if(dr>=tr+s && dc>=tc+s) {//特殊方格在右下角棋盘中

chessBoard(tr+s,tc+s,dr,dc,s);

} else {//特殊方格不在此，则设置左上角方格为特殊方格

board[tr+s][tc+s] = t;

chessBoard(tr+s,tc+s,tr+s,tc+s,s);

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

board[2][2] = 0;//特殊方格的位置

chessBoard(0,0,2,2,board_size);

for(int i=0;i<board_size;i++) {

for(int j=0;j<board_size;j++) {

System.out.print(board[i][j]+" ");

}

System.out.println();

}

}

}