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15 lines
447 B
Python
15 lines
447 B
Python
def removeDuplicates(self, nums: list[int]) -> int:
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# two pointer
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last_unique = 0
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flag = False
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for fast in range(1, len(nums)):
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if nums[last_unique] != nums[fast]:
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flag = False
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last_unique += 1
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nums[last_unique] = nums[fast]
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elif not flag:
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flag = True
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last_unique += 1
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nums[last_unique] = nums[fast]
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return last_unique + 1 # zero-indexed
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