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    "https://leetcode.com/problems/design-hashset\n",
    "\n",
    "\n",
    "Runtime: 96 ms, faster than 34.92% of Go online submissions for Design HashSet.\n",
    "Memory Usage: 7.3 MB, less than 100.00% of Go online submissions for Design HashSet.\n",
    "\n",
    "\n",
    "```go\n",
    "package main\n",
    "\n",
    "type MyHashSet struct {\n",
    "\tset map[int]bool\n",
    "}\n",
    "\n",
    "func Constructor() MyHashSet {\n",
    "\treturn MyHashSet{\n",
    "\t\tmake(map[int]bool),\n",
    "\t}\n",
    "}\n",
    "\n",
    "func (this *MyHashSet) Add(key int) {\n",
    "\tthis.set[key] = true\n",
    "}\n",
    "\n",
    "func (this *MyHashSet) Remove(key int) {\n",
    "\tdelete(this.set, key)\n",
    "}\n",
    "\n",
    "func (this *MyHashSet) Contains(key int) bool {\n",
    "\t_, exists := this.set[key]\n",
    "\treturn exists\n",
    "}\n",
    "```"
   ]
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