[leetcode] 26. Remove Duplicates from Sorted Array

class Solution:
    def removeDuplicates(self, nums: List[int]) -> int:
        nums_len = len(nums)
        
        cnt = 0
        
        for i in range(1, nums_len):
            if nums[cnt] != nums[i]:
                cnt = cnt + 1
                nums[cnt] = nums[i]
        return cnt + 1