Ruby

1def move_zeroes(nums)
2    return nums if nums.size == 1 or nums.size == 0
3    size = nums.size
4    pos = 0
5    
6    for idx in 0...size do
7        if nums[idx] != 0
8            temp = nums[pos]
9            nums[pos] = nums[idx]
10            nums[idx] = temp
11            pos += 1
12        end
13    end
14    nums
15end