Unique Number

import java.io.*;

 class Unique 

{ 

public static void main(String args[])throws IOException

 {

 BufferedReader in=new BufferedReader(new InputStreamReader(System.in));

 int check=0,count=0,m,n,j,d,no_of_digits=0,num; 

System.out.println("\nINPUT:\n");

 System.out.print("m=");

 m=Integer.parseInt(in.readLine());

 System.out.print("n=");

 n=Integer.parseInt(in.readLine());

 System.out.print("UNIQUE DIGIT INTEGERS ARE:");//find unique numbers between m and n for(j=m;j<=n;j++) 

{ 

check=0; for(d=0;d<=9;d++) //this loop helps in checking digits from 0 to 9 { num=j; no_of_digits=0; while(num>0)//finding digits from number stored

 { 

int digit=num%10;

 if(digit==d)//check the equality of extracted digit and value of d

 {

 no_of_digits++;

 }//end if

 num=num/10;

 }//end while loop

 if(no_of_digits>1) 

{

 check=1;

 break;//from here control goes out of for d loop 

}//end if 

}//end of d loop 

if(check==0)//here check=0 means digits of the number is not repeating so it is unique

 { 

System.out.print(j+" ");

 count++; 

}//end if

 }//end for j loop 

System.out.println("\n\nFREQUENCY OF UNIQUE DIGIT INTEGERS ARE:"+count); }//end of main }//end class