      "* Push to the new stack\n",
      "\n",
      "Complexity:\n",
      "* Time: O(1)\n",
      "* Space: O(1)\n",
      "\n",
      "### Pop\n",
      "\n",
      "* If there are no stacks, return None\n",
      "* Else if the last stack has one element\n",
 
</s> remove     "* Pop on a one element stack to destroy it"
 </s> add     "* Pop on a stack to destroy it" </s> remove     "* If a stack becomes full, we should automatically create one?\n",
 </s> add     "* If a stack becomes full, should we automatically create one?\n", </s> remove       "Test: Pop on a one element stack to destroy it\n",
 </s> add       "Test: Pop on a stack to destroy it\n", </s> remove     "        print('Test: Pop on a one element stack to destroy it')\n",
 </s> add     "        print('Test: Pop on a stack to destroy it')\n", </s> remove         print('Test: Pop on a one element stack to destroy it')
 </s> add         print('Test: Pop on a stack to destroy it')
    "* Space: O(m), where m is the size of the new stack\n",
      "* Push to the new stack\n",
      "\n",
      "Complexity:\n",
      "* Time: O(1)\n",
    "* Space: O(m), where m is the size of the new stack\n",
      "\n",
      "### Pop\n",
      "\n",
      "* If there are no stacks, return None\n",
      "* Else if the last stack has one element\n",
keep keep keep keep replace keep keep keep keep keep
 Polish set of stacks solution 
stacks_queues/set_of_stacks/set_of_stacks_solution.ipynb