removeDuplicate

class Solution:
    """
    @param: nums: An ineger array
    @return: An integer
    """
    def removeDuplicates(self, nums):
        # write your code here
        i = 0
        while i < len(nums)-1:
            if nums[i] == nums[i+1]:
                nums.pop(i)
            else:
                i+=1
        return len(nums)