【プログラムF:\ホームページ\8q\PlayApplet.java】**************************

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.regex.*;
import javax.swing.*;

public class PlayApplet extends JApplet
{
    Queens qu;
    //Boad bo;
    Boad2 bo;
    public void init()
    {
        qu=new Queens();
        //bo=new Boad();
        bo=new Boad2(this);
        System.out.println("開始");
        qu.setQueen();    
        bo.Display2(qu.plans);
        bo.Display(qu.plans);
    }
}


public class PlayApplication
{
    public static void main(String[] args){
       
        Queens qu=new Queens();
        System.out.println("開始");
        qu.setQueen();
        Boad bo=new Boad();
        bo.Display2(qu.plans);
        bo.Display(qu.plans);
    }
}



class Boad{
    JFrame jf;
    JScrollPane js;
    JTextArea jt;
    Pattern pattern;
    Matcher matcher;

    
    Boad(){     
        JFrame jf=new JFrame("Boad");
        
        jf.addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent e){System.exit(0);}
        });
        jf.setBounds(0,0,200,800);
        jf.setVisible(true);
        Container co=jf.getContentPane();
        
        jt=new JTextArea();
        js=new JScrollPane(jt);
        co.add(js);
        
        jf.setPreferredSize(new Dimension(200,500));
        jf.pack();
        
    }
    
      void Display2(ArrayList plans){
        
        
        String raw="00000000";
        String cell="□";
        String queen="●";
        String column="";
        int count=1;
        int position=0;
        
        for(int i=0;i<plans.size();i++){
            if(i%8==0){
                jt.append("\n結果その"+count+"\n");
                count++;                  
            }
            
            raw="00000000";
            raw=raw+Integer.toBinaryString((Integer)plans.get(i));
            raw=raw.substring(raw.length()-8)+"\n";
           
            pattern = Pattern.compile("0");
            matcher = pattern.matcher(raw);
            raw=matcher.replaceAll(cell);
     
            pattern = Pattern.compile("1");
            matcher = pattern.matcher(raw);
            raw=matcher.replaceAll(queen);
            
            jt.append(raw);
        }   
         js.setPreferredSize(js.getPreferredSize());
        
    }

    void Display(ArrayList plans){
        int count=1;
        
        for(int i=0;i<plans.size();i++){
            if(i%8==0){
                jt.append("\n結果その"+count+"\n");
                count++;                  
            }
            jt.append(plans.get(i)+",");
            
        } 
       
    }
}


class Boad2{
    JScrollPane js;
    JTextArea jt;
    Pattern pattern;
    Matcher matcher;
   
    Boad2(JApplet c1){     
        Container co=c1.getContentPane();
        co.setBounds(0,0,200,800);

        jt=new JTextArea();
        js=new JScrollPane(jt);
        co.add(js);
    }
    
      void Display2(ArrayList plans){
        
        String raw="00000000";
        String cell="□";
        String queen="●";
        String column="";
        int count=1;
        int position=0;
        
        for(int i=0;i<plans.size();i++){
            if(i%8==0){
                jt.append("\n結果その"+count+"\n");
                count++;                  
            }
            
            raw="00000000";
            raw=raw+Integer.toBinaryString((Integer)plans.get(i));
            raw=raw.substring(raw.length()-8)+"\n";
           
            pattern = Pattern.compile("0");
            matcher = pattern.matcher(raw);
            raw=matcher.replaceAll(cell);
     
            pattern = Pattern.compile("1");
            matcher = pattern.matcher(raw);
            raw=matcher.replaceAll(queen);
            
            jt.append(raw);
        }   
         js.setPreferredSize(js.getPreferredSize());
    }

    void Display(ArrayList plans){
        int count=1;
        
        for(int i=0;i<plans.size();i++){
            if(i%8==0){
                jt.append("\n結果その"+count+"\n");
                count++;                  
            }
            jt.append(plans.get(i)+",");   
        } 
    }
}


public class Queens{
    int[] area={0,0,0,0,0,0,0,0};
    int masque=0;
    int i;
    int count=1;
    Rule rl=new Rule();
    
    ArrayList<Integer> plans=new ArrayList<Integer>();

    void setQueen(){
      
        for(i=0;i<area.length;i++){
            masque=255-rl.setMasque(i,area);
            if(area[i]!=0){
                area[i]=area[i]>>1;
            }
            else if(area[i]==0)area[i]=128;
            
            while((masque & area[i])==0){
                area[i]=area[i]>>1;
                if(area[i]==0){
                    break;
                }
            }
            if(i==7 && area[i]!=0){
                for(int j=0;j<area.length;j++){
                    plans.add(area[j]);
                }
                count++;
                i--;
            }
            if(area[0]==0)break;
            if(area[i]==0)i-=2;            
        }
        System.out.println("完了");
    }
}


public class Rule{
    int masque;
    
    int setMasque(int index,int[] boad){
        masque=0;
        if(index==0)return masque;
        
        for(int i=0;i<index;i++){
            masque=masque|boad[i]|boad[i]<<index-i|boad[i]>>index-i;
        }
        return masque;
    }
}