棋盘覆盖用例

package java2;
import java.util.Scanner;
public class Java2 {
    static int max_size=16;
    static int[][] board=new int[max_size][max_size];
    static int tile=0;
    public static int chessBoard(int tr,int tc,int dr,int dc,int size){
        if(size==1) return 0;
        int t=tile++;
        int s=size/2;
        if(dr<tr+s&&dc<tc+s){
            chessBoard(tr,tc,dr,dc,s);
        }else{
           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){
            chessBoard(tr,tc+s,dr,dc,s);
        }else{
            board[tr+s-1][tc+s]=t;
            chessBoard(tr,tc+s,tr+s-1,tc+s,s);
        }
        if(dr>=tr+s&&dc<tc+s){
            chessBoard(tr+s,tc,dr,dc,s);
        }else{
            board[tr+s][tc+s-1]=t;
            chessBoard(tr+s,tc,tr+s,tc+s-1,s);
        }
        if(dr>=tr+s&&dc>=tc+s){
            chessBoard(tr+s,tc+s,dr,dc,s);
        }else{
            board[tr+s][tc+s]=t;
            chessBoard(tr+s,tc+s,tr+s,tc+s,s);
        }
        return 0;
        
    }

    public static void main(String arg[]){
        Scanner input=new Scanner(System.in);
        System.out.println("特殊方格在棋盘数组Board中的行号");
        int dr=input.nextInt();//特殊方格在棋盘数组Board中的行号
        System.out.println("特殊方格在棋盘数组Board中的列号");
        int dc=input.nextInt();//特殊方格在棋盘数组Board中的列号
        System.out.println("棋盘边长");
        int size=input.nextInt();//棋盘边长
        System.out.print("\n");
        chessBoard(0,0,dr,dc,size);

        for(int i=0;i<size;i++){  
        for(int j=0;j<size;j++)  
        System.out.print(board[i][j]+"\t");  
        System.out.print("\n");  
}
    
}
}