import java.util.Scanner;
class Special_Number
{
public static void main()
{
Scanner sc = new Scanner (System.in);
System.out.println(“Enter any no.”);
int n = sc.nextInt ();
int f = 0;
int r;
while (n>0)
{
int a= n;
r=n%10;
a=a/10;
while (a>=1)
{
if (r==a%10)
{f=1;
System.out.println(“not a special no”);
System.exit(0);
}
a=a/10;
}

n=n/10;
}
if (f ==0)
System.out.println(“special no”);
}
}

In this post I have shared a java program to accept a number from user as input and check whether its a special number or not.A number is special number if it contains digits in such way that no digit of the number is repeated.If the digits of the number are repeated then the number is not a special number.

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