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   "source": [
    "https://leetcode.com/problems/design-hashset/\n",
    "\n",
    "\n",
    "Runtime: 144 ms, faster than 91.82% of Python3 online submissions for Design HashSet.\n",
    "Memory Usage: 19.1 MB, less than 52.56% of Python3 online submissions for Design HashSet.\n",
    "\n",
    "\n",
    "```python\n",
    "class MyHashSet:\n",
    "\n",
    "    def __init__(self):\n",
    "        \"\"\"\n",
    "        Initialize your data structure here.\n",
    "        \"\"\"\n",
    "        self.set = set()\n",
    "\n",
    "    def add(self, key: int) -> None:\n",
    "        self.set.add(key)\n",
    "\n",
    "    def remove(self, key: int) -> None:\n",
    "        try:\n",
    "            self.set.remove(key)\n",
    "        except Exception:\n",
    "            pass\n",
    "\n",
    "    def contains(self, key: int) -> bool:\n",
    "        \"\"\"\n",
    "        Returns true if this set contains the specified element\n",
    "        \"\"\"\n",
    "        return key in self.set\n",
    "```\n",
    "\n",
    "3 minutes\n",
    "\n",
    "2 shoot"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
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