力扣26--删除有序数组中的重复项

题目

python代码

def removeDuplicates(nums):
    n = len(set(nums))
    i = 0
    while i < n:
        if nums[i] == nums[i+1]:
            temp = nums[i+1]
            nums[i+1: len(nums) -1] = nums[i+2:]
            nums[-1] = temp
            continue
        else:
            i += 1
    return n
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