Move Zeroes

Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.

For example, given nums = [0, 1, 0, 3, 12], after calling your function, nums should be [1, 3, 12, 0, 0].

Note: You must do this in-place without making a copy of the array. Minimize the total number of operations.

class Solution(object):
    def moveZeroes(self, nums):
        """
        :type nums: List[int]
        :rtype: void Do not return anything, modify nums in-place instead.
        """
        last_zero = 0
        for i in range(len(nums)): # Don't use enumerate if list changes in the loop
            if nums[i] != 0:
                nums[i], nums[last_zero] = nums[last_zero], nums[i]
                last_zero += 1