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    "class MyHashSet {\n",
    "    mySet: any\n",
    "    constructor() {\n",
    "        this.mySet = new Set();\n",
    "    }\n",
    "\n",
    "    add(key: number): void {\n",
    "        this.mySet.add(key)\n",
    "    }\n",
    "\n",
    "    remove(key: number): void {\n",
    "        this.mySet.delete(key)\n",
    "    }\n",
    "\n",
    "    contains(key: number): boolean {\n",
    "        return this.mySet.has(key)\n",
    "    }\n",
    "}"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "https://leetcode.com/problems/design-hashset/\n",
    "\n",
    "\n",
    "Runtime: 176 ms, faster than 100.00% of TypeScript online submissions for Design HashSet.\n",
    "Memory Usage: 47.9 MB, less than 100.00% of TypeScript online submissions for Design HashSet.\n",
    "\n",
    "\n",
    "\n",
    "```typescript\n",
    "class MyHashSet {\n",
    "    mySet: any\n",
    "    constructor() {\n",
    "        this.mySet = new Set();\n",
    "    }\n",
    "\n",
    "    add(key: number): void {\n",
    "        this.mySet.add(key)\n",
    "    }\n",
    "\n",
    "    remove(key: number): void {\n",
    "        this.mySet.delete(key)\n",
    "    }\n",
    "\n",
    "    contains(key: number): boolean {\n",
    "        return this.mySet.has(key)\n",
    "    }\n",
    "}\n",
    "```"
   ]
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