leetcode专题训练 66. Plus One

很简单的一道题

class Solution:
    def plusOne(self, digits: List[int]) -> List[int]:
        digits[-1] = digits[-1]+1
        count = digits[-1]//10
        digits[-1] = digits[-1]%10
        for i in range(len(digits)-2, -1, -1):
            digits[i] = digits[i]+count
            count = digits[i]//10
            digits[i] = digits[i]%10
        if count:
            digits.insert(0, 1)
        return digits