def moveZeroes(self, nums: List[int]) -> None:
        swapping_index = -1
        
        for i in range(len(nums)): 
            if nums[i] == 0: 
                swapping_index = i
                break
        
        if swapping_index == -1: 
            return 
        
        for i in range(len(nums)):
            if nums[i] and i > swapping_index and swapping_index < len(nums):
                nums[i], nums[swapping_index] = nums[swapping_index], nums[i]
                swapping_index += 1