Author

Author- Ram Ranjeet Kumar

Tuesday, March 10, 2020

Write A Java Program To Diplay All Happy Number Within 100

Write  A Java Program To Diplay All Happy Number Within 100

 


class HappyNo
{
    static boolean isHappy(int n)
    {
        while(n>9)
        {
            int sum=0;
            do
            {
                int r=n%10;
                sum=sum+r*r;
                n=n/10;
            }
            while (n!=0);
            n=sum;
        }
        return n==1||n==7;
     }
    public static void main(String[] args)
    {
        //Scanner sc=new Scanner(System.in);
        System.out.println("\n\n\t\tHappy Number Within 100\n\t\t");
        for(int i=1;i<=100;i++)
        {
            boolean rs=isHappy(i);
            if(rs)
                System.out.print(i+" ");
        }
        System.out.print("\n\n ");
    }
}

OUTPUT


 

1 comment:

  1. This Java program for finding happy numbers is a fun way to explore number theory! If you're interested in enhancing your coding skills, check out hostingmella for some great resources and tutorials.

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