class Solution(object):
    def plusOne(self, digits):
        """
        :type digits: List[int]
        :rtype: List[int]
        """
        res = []
        self.change(digits)
        string = ''.join(digits)
        for i in str(int(string) + 1):
            res.append(int(i))
        return res

    def change(self, digits):
        for index, value in enumerate(digits):
            digits[index] = str(value)


# leetcode最优解 用了列表推倒式
class Solution2(object):
    def plusOne(self, digits):
        """
        :type digits: List[int]
        :rtype: List[int]
        """
        s1 = [str(i) for i in digits]
        s2 = ''.join(s1)
        num1 = int(s2)
        num1 += 1
        s3 = str(num1)
        s4 = list(s3)
        r = [int(i) for i in s4]
        return r


digits = [1, 2, 3]
s = Solution()
print(s.plusOne(digits))