Move Zeroes Python Solution with Tests

lcpy gen -n 283   # by problem number
lcpy gen -s move_zeroes   # by problem name

Input: nums = [0,1,0,3,12]
Output: [1,3,12,0,0]
Explanation: The array after moving zeroes becomes [1,3,12,0,0].

Input: nums = [0]
Output: [0]

class Solution:
    # Two pointers - slow tracks insertion position for next non-zero
    # Fast scans array; swap non-zero to front, preserving relative order
    # Time: O(n)
    # Space: O(1)
    def move_zeroes(self, nums: list[int]) -> None:
        slow = 0
        for fast in range(len(nums)):
            if nums[fast] != 0:
                nums[slow], nums[fast] = nums[fast], nums[slow]
                slow += 1