Last updated 2 years ago
My Solution:
class Solution { public boolean isHappy(int n) { for(int sum = 0; n / 10 != 0 || n % 2 != 0 || n == 1; n = sum, sum = 0){ for(int i = n; i > 0; i /= 10){ sum += Math.pow(i%10, 2); } if(sum == 1){ return true; } } return false; } }