[Leetcode] 202. Happy Number

class Solution:
    def isHappy(self, n: int) -> bool:

        hashmap = {}

        while n > 1:
            nums = [int(x) for x in str(n)]
            n = 0
            for num in nums:
                n += (num ** 2)

            if hashmap.get(n, False):
                return False
            hashmap[n] = 1
        return True