Special.java

/*
The program is to check whether a given number is a special number or not.
A special number is a number whose all digits are 1
Example-11,111
*/
import java.util.*;
class special
{
     static void number(int x)
    {

        int s=0,c=0;
        while(x!=0)
        {
            int b=x%10;
	     /*sum of digits*/
            s=s+b;
         /*count of digits*/
            c++;
            x=x/10;
        }
         /*If the sum of digits and count
         of digits is equal 
         then special*/
        if(s==c)
        System.out.println("The given number is special");
        else
        System.out.println("The given number is not special");
    }
    public static void main()
    {
        Scanner sc=new Scanner(System.in);
	  /*Input number 
        which is to be checked*/
        System.out.println("Enter the number");
        int n=sc.nextInt();
        number(n);
    }
}

/*
Time Complexity:O(n)
Space Complexity:O(1)
Input/Output:-
Enter the number 
1111
The given number is special
*/