989. Add to Array-Form of Integer

https://leetcode.com/problems/add-to-array-form-of-integer/

Python

class Solution:
    def addToArrayForm(self, num: List[int], k: int) -> List[int]:
        pow = 0
        while num:
            k += num.pop() * (10**pow)
            pow += 1

        return [int(char) for char in str(k)]