import javax.swing.JOptionPane;

public class NumGuess {

 public static void main(String[] args) {
  
  int i;
  String s1;
  boolean hasGuess = true;
  boolean jude;
//  產生亂數不重複的數字
  do {
  jude = false;
  i =(int)((Math.random()*10000)+1);
  s1=String.valueOf(i);
  if (s1.length() == 4){
  for (int m=0;m<3;m++)
   for (int n=m+1;n<4;n++){
    if (s1.charAt(m) == s1.charAt(n)){
    jude = true;
    break;
   }
   }  
  }else jude = true;  
   }while (jude);

//  開始猜數字  
  while(hasGuess){
   int a=0,b=0;
   String c1 = JOptionPane.showInputDialog("請輸入4個 0-9"+
                             "不重複的數字:");
   for (int x=0;x<4;x++)
    for (int y=0;y<4;y++){
     if ( s1.charAt(x) == c1.charAt(y)){
      if (x == y) a++;
      else b++;
     }
   }
  
  if (a == 4){
   hasGuess = false;
   JOptionPane.showMessageDialog(null,"恭喜您猜對了!");
   }else JOptionPane.showMessageDialog(null,a + "A " 
         + b + "B");
  }
 }
}