new_contents: class Solution(object):
      def moveZeroes(self, nums):
          """
          :type nums: List[int]
          :rtype: void Do not return anything, modify nums in-place instead.
          """
          count = 0
          l = len(nums)
          for i in range(l):
              if nums[i] != 0:
                  nums[count] = nums[i]
                  count += 1
          nums[count:l] = [0] * (l - count)
          
  
subject: Solve task #283