class Solution:
def plusOne(self, digits):
"""
:type digits: List[int]
:rtype: List[int]
"""
car = 1
res = []
for i in range(len(digits)):
tmp = digits.pop() + car
car = int(tmp/10)
res.insert(0, tmp%10)
if car != 0:
res.insert(0, car)
return res
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