66.plus-one.py

#
# @lc app=leetcode id=66 lang=python3
#
# [66] Plus One
#

# @lc code=start
class Solution:
    def plusOne(self, digits: List[int]) -> List[int]:
        for i in range(len(digits)-1, -1, -1):
            if digits[i] == 9:
                digits[i] = 0
            else:
                digits[i] += 1
                return digits
        digits.insert(0, 1)
        return digits
            


# @lc code=end