26. Remove Duplicates from Sorted Array

https://leetcode.com/problems/remove-duplicates-from-sorted-array

Python

class Solution:
    def removeDuplicates(self, nums: List[int]) -> int:
        if length := len(nums) < 2:
            return length

        cur, after = 0, 1

        while after < len(nums):
            if nums[cur] != nums[after]:
                cur += 1
                nums[cur], nums[after] = nums[after], nums[cur]
            after += 1
        return cur + 1