Fascinating Number in JAVA

What is Fascinating Number?

Given a number N, the task is to check whether it is fascinating or not. 

Fascinating Number: When a number( 3 digits or more ) is multiplied by 2 and 3, and when both these products are concatenated with the original number, then it results in all digits from 1 to 9 present exactly once. There could be any number of zeros and are ignored. 

Examples: 

 

Input: 192 

Output: Yes 

After multiplication with 2 and 3, and concatenating with original number, resultant number is 192384576 which contains all digits from 1 to 9.

Input: 853 

Output: No 

After multiplication with 2 and 3, and concatenating with original number, the resultant number is 85317062559. In this, number 4 is missing and the number 5 has appeared multiple times.

import java.util.*;

class Fascinating

{

boolean isFascinating(int n)

{

String num = String.valueOf(n) + String.valueOf(n*2) + String.valueOf(n*3);

int count;

for(char i='1';i<='9';i++)

{

count = 0;

for(int j=0;j<num.length();j++)

{

if(num.charAt(j)==i)

{

count++;

}

}

if(count != 1)

{

return false;

}

}

return true;

}

public static void main(String args[])

{

Scanner in = new Scanner(System.in);

Fascinating obj = new Fascinating();

int num;

System.out.println("Enter number here : ");

num = in.nextInt();

if(obj.isFascinating(num))

{

System.out.println(num+" is Fascinating Number");

}

else

{

System.out.println(num+" is not a Fascinating Number");

}

}

}