Magic Number.

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Program to check whether a given number is Magic number or not.

  • A number is said to be a Magic number if the sum of its digits are calculated till a single digit is obtained by recursively adding the sum of its digits.
  • If the single digit comes to be 1 then the number is a magic number.
For example 199 is a magic number as 1+9+9=19 but 19 is not a single digit number so 1+9=10 and then 1+0=1 which is a single digit number and also 1. Hence it is a Magic number.






SOURCE CODE


import java.io.*;
import java.util.*;
public class Magic
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter a number    :");
        int n=sc.nextInt();
        int s=n;
        while(s>9)
        {
            n=s;s=0;
            while(n>0)
            {
                int rem=n%10;
                s=s+rem;
                n=n/10;
            }
        }
        if(s==1)
            System.out.println("Yes, it is a magic number");
        else
            System.out.println("No, it is not a magic number");
    }
}


OUTPUT






Click Here to download the Program


If you have any question then leave a comment below I will do my best to answer that question.

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