LeetCode-80-Remove Duplicates from Sorted Array II 水题

class Solution(object):
    def removeDuplicates(self, nums):
        """
        :type nums: List[int]
        :rtype: int
        """
        if nums==[]:return 0
        Len=len(nums)
        for i in range(Len-3,-1,-1):
            if nums[i]==nums[i+2]:
                del nums[i+2]
        return len(nums)