0026-remove-duplicates-from-sorted-array.py

class Solution:
    def removeDuplicates(self, nums: List[int]) -> int:
        if not nums: 
            return 0 

        i = 0 
        for j in range(1, len(nums)): 
            if nums[i] != nums[j]: 
                i += 1 
                nums[i] = nums[j] 

        return i + 1