Leetcode-Easy 989. Add to Array-Form of Integer

Input: A = [1,2,0,0], K = 34
Output: [1,2,3,4]
Explanation: 1200 + 34 = 1234

class Solution:
    def addToArrayForm(self, A: 'List[int]', K: 'int') -> 'List[int]':

class Solution(object):
    def addToArrayForm(self, A, K):
        A[-1] += K
        for i in xrange(len(A) - 1, -1, -1):
            carry, A[i] = divmod(A[i], 10)
            if i: A[i-1] += carry
        if carry:
            A = map(int, str(carry)) + A
        return A