How to write a program in java for a happy number

Question

happy number is a number whose ultimate sum is 1.
eg.lets take the number 82.
sum of its digits is 10.
and sum of digits of 10 is 1.
so 82 is a happy number.

Answer 1

try to write a block of code which calculates the sum of the digits, then for example execute this code in a while (sum < 10) , now it will calculate the sum, till the sum is smaller than 10, almost finished just pus a simple if statement and check if the sum is 1

that's it

note, I am not writing any code, because I won't you to learn something, and not just get the answer

hope this helps ^^

Answer 2

https://code.sololearn.com/ckA7E9Fq931F/?ref=app

Answer 3

I have written