One line python solution


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    Intuitively, convert the list of digits into one integer and plus one to it and then convert back to a list.

    class Solution(object):
        def plusOne(self, digits):
            """
            :type digits: List[int]
            :rtype: List[int]
            """
            return map(int,str(int(''.join(map(str, digits))) + 1))
            
    

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