leetcode-problemset/leetcode-cn/originData/insert-delete-getrandom-o1-duplicates-allowed.json

{
    "data": {
        "question": {
            "questionId": "381",
            "questionFrontendId": "381",
            "categoryTitle": "Algorithms",
            "boundTopicId": 1653,
            "title": "Insert Delete GetRandom O(1) - Duplicates allowed",
            "titleSlug": "insert-delete-getrandom-o1-duplicates-allowed",
            "content": "<p><code>RandomizedCollection</code> is a data structure that contains a collection of numbers, possibly duplicates (i.e., a multiset). It should support inserting and removing specific elements and also reporting a random element.</p>\n\n<p>Implement the <code>RandomizedCollection</code> class:</p>\n\n<ul>\n\t<li><code>RandomizedCollection()</code> Initializes the empty <code>RandomizedCollection</code> object.</li>\n\t<li><code>bool insert(int val)</code> Inserts an item <code>val</code> into the multiset, even if the item is already present. Returns <code>true</code> if the item is not present, <code>false</code> otherwise.</li>\n\t<li><code>bool remove(int val)</code> Removes an item <code>val</code> from the multiset if present. Returns <code>true</code> if the item is present, <code>false</code> otherwise. Note that if <code>val</code> has multiple occurrences in the multiset, we only remove one of them.</li>\n\t<li><code>int getRandom()</code> Returns a random element from the current multiset of elements. The probability of each element being returned is <strong>linearly related</strong> to the number of the same values the multiset contains.</li>\n</ul>\n\n<p>You must implement the functions of the class such that each function works on <strong>average</strong> <code>O(1)</code> time complexity.</p>\n\n<p><strong>Note:</strong> The test cases are generated such that <code>getRandom</code> will only be called if there is <strong>at least one</strong> item in the <code>RandomizedCollection</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;RandomizedCollection&quot;, &quot;insert&quot;, &quot;insert&quot;, &quot;insert&quot;, &quot;getRandom&quot;, &quot;remove&quot;, &quot;getRandom&quot;]\n[[], [1], [1], [2], [], [1], []]\n<strong>Output</strong>\n[null, true, false, true, 2, true, 1]\n\n<strong>Explanation</strong>\nRandomizedCollection randomizedCollection = new RandomizedCollection();\nrandomizedCollection.insert(1);   // return true since the collection does not contain 1.\n                                  // Inserts 1 into the collection.\nrandomizedCollection.insert(1);   // return false since the collection contains 1.\n                                  // Inserts another 1 into the collection. Collection now contains [1,1].\nrandomizedCollection.insert(2);   // return true since the collection does not contain 2.\n                                  // Inserts 2 into the collection. Collection now contains [1,1,2].\nrandomizedCollection.getRandom(); // getRandom should:\n                                  // - return 1 with probability 2/3, or\n                                  // - return 2 with probability 1/3.\nrandomizedCollection.remove(1);   // return true since the collection contains 1.\n                                  // Removes 1 from the collection. Collection now contains [1,2].\nrandomizedCollection.getRandom(); // getRandom should return 1 or 2, both equally likely.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>-2<sup>31</sup> &lt;= val &lt;= 2<sup>31</sup> - 1</code></li>\n\t<li>At most <code>2 * 10<sup>5</sup></code> calls <strong>in total</strong> will be made to <code>insert</code>, <code>remove</code>, and <code>getRandom</code>.</li>\n\t<li>There will be <strong>at least one</strong> element in the data structure when <code>getRandom</code> is called.</li>\n</ul>\n",
            "translatedTitle": "O(1) 时间插入、删除和获取随机元素 - 允许重复",
            "translatedContent": "<p><code>RandomizedCollection</code> 是一种包含数字集合(可能是重复的)的数据结构。它应该支持插入和删除特定元素，以及删除随机元素。</p>\n\n<p>实现 <code>RandomizedCollection</code> 类:</p>\n\n<ul>\n\t<li><code>RandomizedCollection()</code>初始化空的 <code>RandomizedCollection</code> 对象。</li>\n\t<li><code>bool insert(int val)</code>&nbsp;将一个 <code>val</code> 项插入到集合中，即使该项已经存在。如果该项不存在，则返回 <code>true</code> ，否则返回 <code>false</code> 。</li>\n\t<li><code>bool remove(int val)</code>&nbsp;如果存在，从集合中移除一个 <code>val</code> 项。如果该项存在，则返回 <code>true</code> ，否则返回 <code>false</code> 。注意，如果 <code>val</code> 在集合中出现多次，我们只删除其中一个。</li>\n\t<li><code>int getRandom()</code> 从当前的多个元素集合中返回一个随机元素。每个元素被返回的概率与集合中包含的相同值的数量 <strong>线性相关</strong> 。</li>\n</ul>\n\n<p>您必须实现类的函数，使每个函数的 <strong>平均</strong> 时间复杂度为 <code>O(1)</code> 。</p>\n\n<p><strong>注意：</strong>生成测试用例时，只有在 <code>RandomizedCollection</code> 中 <strong>至少有一项</strong> 时，才会调用 <code>getRandom</code> 。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入</strong>\n[\"RandomizedCollection\", \"insert\", \"insert\", \"insert\", \"getRandom\", \"remove\", \"getRandom\"]\n[[], [1], [1], [2], [], [1], []]\n<strong>输出</strong>\n[null, true, false, true, 2, true, 1]\n\n<strong>解释</strong>\nRandomizedCollection collection = new RandomizedCollection();// 初始化一个空的集合。\ncollection.insert(1);   // 返回 true，因为集合不包含 1。\n                        // 将 1 插入到集合中。\ncollection.insert(1);   // 返回 false，因为集合包含 1。\n&nbsp;                       // 将另一个 1 插入到集合中。集合现在包含 [1,1]。\ncollection.insert(2);   // 返回 true，因为集合不包含 2。\n&nbsp;                       // 将 2 插入到集合中。集合现在包含 [1,1,2]。\ncollection.getRandom(); // getRandom 应当:\n&nbsp;                       // 有 2/3 的概率返回 1,\n&nbsp;                       // 1/3 的概率返回 2。\ncollection.remove(1);   // 返回 true，因为集合包含 1。\n&nbsp;                       // 从集合中移除 1。集合现在包含 [1,2]。\ncollection.getRandom(); // getRandom 应该返回 1 或 2，两者的可能性相同。</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>-2<sup>31</sup>&nbsp;&lt;= val &lt;= 2<sup>31</sup>&nbsp;- 1</code></li>\n\t<li><code>insert</code>,&nbsp;<code>remove</code>&nbsp;和&nbsp;<code>getRandom</code>&nbsp;最多 <strong>总共</strong> 被调用&nbsp;<code>2 * 10<sup>5</sup></code>&nbsp;次</li>\n\t<li>当调用 <code>getRandom</code> 时，数据结构中 <strong>至少有一个</strong> 元素</li>\n</ul>\n",
            "isPaidOnly": false,
            "difficulty": "Hard",
            "likes": 272,
            "dislikes": 0,
            "isLiked": null,
            "similarQuestions": "[{\"title\": \"Insert Delete GetRandom O(1)\", \"titleSlug\": \"insert-delete-getrandom-o1\", \"difficulty\": \"Medium\", \"translatedTitle\": \"O(1) \\u65f6\\u95f4\\u63d2\\u5165\\u3001\\u5220\\u9664\\u548c\\u83b7\\u53d6\\u968f\\u673a\\u5143\\u7d20\", \"isPaidOnly\": false}]",
            "contributors": [],
            "langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python\": false, \"python3\": false, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"typescript\": false, \"bash\": false, \"php\": false, \"swift\": false, \"kotlin\": false, \"dart\": false, \"golang\": false, \"ruby\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"rust\": false, \"racket\": false, \"erlang\": false, \"elixir\": false, \"pythondata\": false, \"react\": false, \"vanillajs\": false, \"postgresql\": false}",
            "topicTags": [
                {
                    "name": "Design",
                    "slug": "design",
                    "translatedName": "设计",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Array",
                    "slug": "array",
                    "translatedName": "数组",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Hash Table",
                    "slug": "hash-table",
                    "translatedName": "哈希表",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Math",
                    "slug": "math",
                    "translatedName": "数学",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Randomized",
                    "slug": "randomized",
                    "translatedName": "随机化",
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": [
                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "class RandomizedCollection {\npublic:\n    RandomizedCollection() {\n\n    }\n    \n    bool insert(int val) {\n\n    }\n    \n    bool remove(int val) {\n\n    }\n    \n    int getRandom() {\n\n    }\n};\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * RandomizedCollection* obj = new RandomizedCollection();\n * bool param_1 = obj->insert(val);\n * bool param_2 = obj->remove(val);\n * int param_3 = obj->getRandom();\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Java",
                    "langSlug": "java",
                    "code": "class RandomizedCollection {\n\n    public RandomizedCollection() {\n\n    }\n    \n    public boolean insert(int val) {\n\n    }\n    \n    public boolean remove(int val) {\n\n    }\n    \n    public int getRandom() {\n\n    }\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * RandomizedCollection obj = new RandomizedCollection();\n * boolean param_1 = obj.insert(val);\n * boolean param_2 = obj.remove(val);\n * int param_3 = obj.getRandom();\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python",
                    "langSlug": "python",
                    "code": "class RandomizedCollection(object):\n\n    def __init__(self):\n\n\n    def insert(self, val):\n        \"\"\"\n        :type val: int\n        :rtype: bool\n        \"\"\"\n\n\n    def remove(self, val):\n        \"\"\"\n        :type val: int\n        :rtype: bool\n        \"\"\"\n\n\n    def getRandom(self):\n        \"\"\"\n        :rtype: int\n        \"\"\"\n\n\n\n# Your RandomizedCollection object will be instantiated and called as such:\n# obj = RandomizedCollection()\n# param_1 = obj.insert(val)\n# param_2 = obj.remove(val)\n# param_3 = obj.getRandom()",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "class RandomizedCollection:\n\n    def __init__(self):\n\n\n    def insert(self, val: int) -> bool:\n\n\n    def remove(self, val: int) -> bool:\n\n\n    def getRandom(self) -> int:\n\n\n\n# Your RandomizedCollection object will be instantiated and called as such:\n# obj = RandomizedCollection()\n# param_1 = obj.insert(val)\n# param_2 = obj.remove(val)\n# param_3 = obj.getRandom()",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "\n\n\ntypedef struct {\n    \n} RandomizedCollection;\n\n\nRandomizedCollection* randomizedCollectionCreate() {\n    \n}\n\nbool randomizedCollectionInsert(RandomizedCollection* obj, int val) {\n    \n}\n\nbool randomizedCollectionRemove(RandomizedCollection* obj, int val) {\n    \n}\n\nint randomizedCollectionGetRandom(RandomizedCollection* obj) {\n    \n}\n\nvoid randomizedCollectionFree(RandomizedCollection* obj) {\n    \n}\n\n/**\n * Your RandomizedCollection struct will be instantiated and called as such:\n * RandomizedCollection* obj = randomizedCollectionCreate();\n * bool param_1 = randomizedCollectionInsert(obj, val);\n \n * bool param_2 = randomizedCollectionRemove(obj, val);\n \n * int param_3 = randomizedCollectionGetRandom(obj);\n \n * randomizedCollectionFree(obj);\n*/",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class RandomizedCollection {\n\n    public RandomizedCollection() {\n\n    }\n    \n    public bool Insert(int val) {\n\n    }\n    \n    public bool Remove(int val) {\n\n    }\n    \n    public int GetRandom() {\n\n    }\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * RandomizedCollection obj = new RandomizedCollection();\n * bool param_1 = obj.Insert(val);\n * bool param_2 = obj.Remove(val);\n * int param_3 = obj.GetRandom();\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "\nvar RandomizedCollection = function() {\n\n};\n\n/** \n * @param {number} val\n * @return {boolean}\n */\nRandomizedCollection.prototype.insert = function(val) {\n\n};\n\n/** \n * @param {number} val\n * @return {boolean}\n */\nRandomizedCollection.prototype.remove = function(val) {\n\n};\n\n/**\n * @return {number}\n */\nRandomizedCollection.prototype.getRandom = function() {\n\n};\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * var obj = new RandomizedCollection()\n * var param_1 = obj.insert(val)\n * var param_2 = obj.remove(val)\n * var param_3 = obj.getRandom()\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class RandomizedCollection {\n    constructor() {\n        \n    }\n\n    insert(val: number): boolean {\n        \n    }\n\n    remove(val: number): boolean {\n        \n    }\n\n    getRandom(): number {\n        \n    }\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * var obj = new RandomizedCollection()\n * var param_1 = obj.insert(val)\n * var param_2 = obj.remove(val)\n * var param_3 = obj.getRandom()\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "class RandomizedCollection {\n    /**\n     */\n    function __construct() {\n\n    }\n\n    /**\n     * @param Integer $val\n     * @return Boolean\n     */\n    function insert($val) {\n\n    }\n\n    /**\n     * @param Integer $val\n     * @return Boolean\n     */\n    function remove($val) {\n\n    }\n\n    /**\n     * @return Integer\n     */\n    function getRandom() {\n\n    }\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * $obj = RandomizedCollection();\n * $ret_1 = $obj->insert($val);\n * $ret_2 = $obj->remove($val);\n * $ret_3 = $obj->getRandom();\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "\nclass RandomizedCollection {\n\n    init() {\n\n    }\n    \n    func insert(_ val: Int) -> Bool {\n\n    }\n    \n    func remove(_ val: Int) -> Bool {\n\n    }\n    \n    func getRandom() -> Int {\n\n    }\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * let obj = RandomizedCollection()\n * let ret_1: Bool = obj.insert(val)\n * let ret_2: Bool = obj.remove(val)\n * let ret_3: Int = obj.getRandom()\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class RandomizedCollection() {\n\n    fun insert(`val`: Int): Boolean {\n\n    }\n\n    fun remove(`val`: Int): Boolean {\n\n    }\n\n    fun getRandom(): Int {\n\n    }\n\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * var obj = RandomizedCollection()\n * var param_1 = obj.insert(`val`)\n * var param_2 = obj.remove(`val`)\n * var param_3 = obj.getRandom()\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Dart",
                    "langSlug": "dart",
                    "code": "class RandomizedCollection {\n\n  RandomizedCollection() {\n    \n  }\n  \n  bool insert(int val) {\n    \n  }\n  \n  bool remove(int val) {\n    \n  }\n  \n  int getRandom() {\n    \n  }\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * RandomizedCollection obj = RandomizedCollection();\n * bool param1 = obj.insert(val);\n * bool param2 = obj.remove(val);\n * int param3 = obj.getRandom();\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "type RandomizedCollection struct {\n\n}\n\n\nfunc Constructor() RandomizedCollection {\n\n}\n\n\nfunc (this *RandomizedCollection) Insert(val int) bool {\n\n}\n\n\nfunc (this *RandomizedCollection) Remove(val int) bool {\n\n}\n\n\nfunc (this *RandomizedCollection) GetRandom() int {\n\n}\n\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * obj := Constructor();\n * param_1 := obj.Insert(val);\n * param_2 := obj.Remove(val);\n * param_3 := obj.GetRandom();\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "class RandomizedCollection\n    def initialize()\n\n    end\n\n\n=begin\n    :type val: Integer\n    :rtype: Boolean\n=end\n    def insert(val)\n\n    end\n\n\n=begin\n    :type val: Integer\n    :rtype: Boolean\n=end\n    def remove(val)\n\n    end\n\n\n=begin\n    :rtype: Integer\n=end\n    def get_random()\n\n    end\n\n\nend\n\n# Your RandomizedCollection object will be instantiated and called as such:\n# obj = RandomizedCollection.new()\n# param_1 = obj.insert(val)\n# param_2 = obj.remove(val)\n# param_3 = obj.get_random()",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "class RandomizedCollection() {\n\n    def insert(`val`: Int): Boolean = {\n\n    }\n\n    def remove(`val`: Int): Boolean = {\n\n    }\n\n    def getRandom(): Int = {\n\n    }\n\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * var obj = new RandomizedCollection()\n * var param_1 = obj.insert(`val`)\n * var param_2 = obj.remove(`val`)\n * var param_3 = obj.getRandom()\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "struct RandomizedCollection {\n\n}\n\n\n/**\n * `&self` means the method takes an immutable reference.\n * If you need a mutable reference, change it to `&mut self` instead.\n */\nimpl RandomizedCollection {\n\n    fn new() -> Self {\n\n    }\n    \n    fn insert(&self, val: i32) -> bool {\n\n    }\n    \n    fn remove(&self, val: i32) -> bool {\n\n    }\n    \n    fn get_random(&self) -> i32 {\n\n    }\n}\n\n/**\n * Your RandomizedCollection object will be instantiated and called as such:\n * let obj = RandomizedCollection::new();\n * let ret_1: bool = obj.insert(val);\n * let ret_2: bool = obj.remove(val);\n * let ret_3: i32 = obj.get_random();\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Racket",
                    "langSlug": "racket",
                    "code": "(define randomized-collection%\n  (class object%\n    (super-new)\n    \n    (init-field)\n    \n    ; insert : exact-integer? -> boolean?\n    (define/public (insert val)\n      )\n    ; remove : exact-integer? -> boolean?\n    (define/public (remove val)\n      )\n    ; get-random : -> exact-integer?\n    (define/public (get-random)\n      )))\n\n;; Your randomized-collection% object will be instantiated and called as such:\n;; (define obj (new randomized-collection%))\n;; (define param_1 (send obj insert val))\n;; (define param_2 (send obj remove val))\n;; (define param_3 (send obj get-random))",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec randomized_collection_init_() -> any().\nrandomized_collection_init_() ->\n  .\n\n-spec randomized_collection_insert(Val :: integer()) -> boolean().\nrandomized_collection_insert(Val) ->\n  .\n\n-spec randomized_collection_remove(Val :: integer()) -> boolean().\nrandomized_collection_remove(Val) ->\n  .\n\n-spec randomized_collection_get_random() -> integer().\nrandomized_collection_get_random() ->\n  .\n\n\n%% Your functions will be called as such:\n%% randomized_collection_init_(),\n%% Param_1 = randomized_collection_insert(Val),\n%% Param_2 = randomized_collection_remove(Val),\n%% Param_3 = randomized_collection_get_random(),\n\n%% randomized_collection_init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Elixir",
                    "langSlug": "elixir",
                    "code": "defmodule RandomizedCollection do\n  @spec init_() :: any\n  def init_() do\n    \n  end\n\n  @spec insert(val :: integer) :: boolean\n  def insert(val) do\n    \n  end\n\n  @spec remove(val :: integer) :: boolean\n  def remove(val) do\n    \n  end\n\n  @spec get_random() :: integer\n  def get_random() do\n    \n  end\nend\n\n# Your functions will be called as such:\n# RandomizedCollection.init_()\n# param_1 = RandomizedCollection.insert(val)\n# param_2 = RandomizedCollection.remove(val)\n# param_3 = RandomizedCollection.get_random()\n\n# RandomizedCollection.init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
                }
            ],
            "stats": "{\"totalAccepted\": \"27.5K\", \"totalSubmission\": \"65.2K\", \"totalAcceptedRaw\": 27502, \"totalSubmissionRaw\": 65235, \"acRate\": \"42.2%\"}",
            "hints": [],
            "solution": null,
            "status": null,
            "sampleTestCase": "[\"RandomizedCollection\",\"insert\",\"insert\",\"insert\",\"getRandom\",\"remove\",\"getRandom\"]\n[[],[1],[1],[2],[],[1],[]]",
            "metaData": "{\n  \"classname\": \"RandomizedCollection\",\n  \"constructor\": {\n    \"params\": []\n  },\n  \"methods\": [\n    {\n      \"params\": [\n        {\n          \"type\": \"integer\",\n          \"name\": \"val\"\n        }\n      ],\n      \"return\": {\n        \"type\": \"boolean\"\n      },\n      \"name\": \"insert\"\n    },\n    {\n      \"params\": [\n        {\n          \"type\": \"integer\",\n          \"name\": \"val\"\n        }\n      ],\n      \"return\": {\n        \"type\": \"boolean\"\n      },\n      \"name\": \"remove\"\n    },\n    {\n      \"params\": [],\n      \"return\": {\n        \"type\": \"integer\"\n      },\n      \"name\": \"getRandom\"\n    }\n  ],\n  \"return\": {\n    \"type\": \"boolean\"\n  },\n  \"systemdesign\": true\n}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [],
            "enableRunCode": true,
            "envInfo": "{\"cpp\":[\"C++\",\"<p>\\u7248\\u672c\\uff1a<code>clang 11<\\/code> \\u91c7\\u7528\\u6700\\u65b0C++ 20\\u6807\\u51c6\\u3002<\\/p>\\r\\n\\r\\n<p>\\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528<code>-O2<\\/code>\\u7ea7\\u4f18\\u5316\\u3002<a href=\\\"https:\\/\\/github.com\\/google\\/sanitizers\\/wiki\\/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer<\\/a> \\u4e5f\\u88ab\\u5f00\\u542f\\u6765\\u68c0\\u6d4b<code>out-of-bounds<\\/code>\\u548c<code>use-after-free<\\/code>\\u9519\\u8bef\\u3002<\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\"],\"java\":[\"Java\",\"<p>\\u7248\\u672c\\uff1a<code>OpenJDK 17<\\/code>\\u3002\\u53ef\\u4ee5\\u4f7f\\u7528Java 8\\u7684\\u7279\\u6027\\u4f8b\\u5982\\uff0clambda expressions \\u548c stream API\\u3002<\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u88ab\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u5305\\u542b Pair \\u7c7b: https:\\/\\/docs.oracle.com\\/javase\\/8\\/javafx\\/api\\/javafx\\/util\\/Pair.html <\\/p>\"],\"python\":[\"Python\",\"<p>\\u7248\\u672c\\uff1a <code>Python 2.7.12<\\/code><\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 \\u5bfc\\u5165\\uff0c\\u5982\\uff1a<a href=\\\"https:\\/\\/docs.python.org\\/2\\/library\\/array.html\\\" target=\\\"_blank\\\">array<\\/a>, <a href=\\\"https:\\/\\/docs.python.org\\/2\\/library\\/bisect.html\\\" target=\\\"_blank\\\">bisect<\\/a>, <a href=\\\"https:\\/\\/docs.python.org\\/2\\/library\\/collections.html\\\" target=\\\"_blank\\\">collections<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u6ce8\\u610f Python 2.7 <a href=\\\"https:\\/\\/www.python.org\\/dev\\/peps\\/pep-0373\\/\\\" target=\\\"_blank\\\">\\u5c06\\u57282020\\u5e74\\u540e\\u4e0d\\u518d\\u7ef4\\u62a4<\\/a>\\u3002 \\u5982\\u60f3\\u4f7f\\u7528\\u6700\\u65b0\\u7248\\u7684Python\\uff0c\\u8bf7\\u9009\\u62e9Python 3\\u3002<\\/p>\"],\"c\":[\"C\",\"<p>\\u7248\\u672c\\uff1a<code>GCC 8.2<\\/code>\\uff0c\\u91c7\\u7528GNU11\\u6807\\u51c6\\u3002<\\/p>\\r\\n\\r\\n<p>\\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528<code>-O1<\\/code>\\u7ea7\\u4f18\\u5316\\u3002 <a href=\\\"https:\\/\\/github.com\\/google\\/sanitizers\\/wiki\\/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer<\\/a>\\u4e5f\\u88ab\\u5f00\\u542f\\u6765\\u68c0\\u6d4b<code>out-of-bounds<\\/code>\\u548c<code>use-after-free<\\/code>\\u9519\\u8bef\\u3002<\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u5982\\u60f3\\u4f7f\\u7528\\u54c8\\u5e0c\\u8868\\u8fd0\\u7b97, \\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 <a href=\\\"https:\\/\\/troydhanson.github.io\\/uthash\\/\\\" target=\\\"_blank\\\">uthash<\\/a>\\u3002 \\\"uthash.h\\\"\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5bfc\\u5165\\u3002\\u8bf7\\u770b\\u5982\\u4e0b\\u793a\\u4f8b:<\\/p>\\r\\n\\r\\n<p><b>1. \\u5f80\\u54c8\\u5e0c\\u8868\\u4e2d\\u6dfb\\u52a0\\u4e00\\u4e2a\\u5bf9\\u8c61\\uff1a<\\/b>\\r\\n<pre>\\r\\nstruct hash_entry {\\r\\n    int id;            \\/* we'll use this field as the key *\\/\\r\\n    char name[10];\\r\\n    UT_hash_handle hh; \\/* makes this structure hashable *\\/\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n    HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\\r\\n\\r\\n<p><b>2. \\u5728\\u54c8\\u5e0c\\u8868\\u4e2d\\u67e5\\u627e\\u4e00\\u4e2a\\u5bf9\\u8c61\\uff1a<\\/b>\\r\\n<pre>\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n    struct hash_entry *s;\\r\\n    HASH_FIND_INT(users, &user_id, s);\\r\\n    return s;\\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\\r\\n\\r\\n<p><b>3. \\u4ece\\u54c8\\u5e0c\\u8868\\u4e2d\\u5220\\u9664\\u4e00\\u4e2a\\u5bf9\\u8c61\\uff1a<\\/b>\\r\\n<pre>\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n    HASH_DEL(users, user);  \\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\"],\"csharp\":[\"C#\",\"<p><a href=\\\"https:\\/\\/docs.microsoft.com\\/en-us\\/dotnet\\/csharp\\/whats-new\\/csharp-9\\\" target=\\\"_blank\\\">C# 10<\\/a> \\u8fd0\\u884c\\u5728 .NET 6 \\u4e0a<\\/p>\"],\"javascript\":[\"JavaScript\",\"<p>\\u7248\\u672c\\uff1a<code>Node.js 16.13.2<\\/code><\\/p>\\r\\n\\r\\n<p>\\u60a8\\u7684\\u4ee3\\u7801\\u5728\\u6267\\u884c\\u65f6\\u5c06\\u5e26\\u4e0a <code>--harmony<\\/code> \\u6807\\u8bb0\\u6765\\u5f00\\u542f <a href=\\\"http:\\/\\/node.green\\/\\\" target=\\\"_blank\\\">\\u65b0\\u7248ES6\\u7279\\u6027<\\/a>\\u3002<\\/p>\\r\\n\\r\\n<p><a href=\\\"https:\\/\\/lodash.com\\\" target=\\\"_blank\\\">lodash.js<\\/a> \\u5e93\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5305\\u542b\\u3002<\\/p>\\r\\n\\r\\n<p> \\u5982\\u9700\\u4f7f\\u7528\\u961f\\u5217\\/\\u4f18\\u5148\\u961f\\u5217\\uff0c\\u60a8\\u53ef\\u4f7f\\u7528 <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/priority-queue\\/tree\\/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\"> datastructures-js\\/priority-queue@5.3.0<\\/a> \\u548c <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/queue\\/tree\\/e63563025a5a805aa16928cb53bcd517bfea9230\\\" target=\\\"_blank\\\"> datastructures-js\\/queue@4.2.1<\\/a>\\u3002<\\/p>\"],\"ruby\":[\"Ruby\",\"<p>\\u4f7f\\u7528<code>Ruby 3.1<\\/code>\\u6267\\u884c<\\/p>\\r\\n\\r\\n<p>\\u4e00\\u4e9b\\u5e38\\u7528\\u7684\\u6570\\u636e\\u7ed3\\u6784\\u5df2\\u5728 Algorithms \\u6a21\\u5757\\u4e2d\\u63d0\\u4f9b\\uff1ahttps:\\/\\/www.rubydoc.info\\/github\\/kanwei\\/algorithms\\/Algorithms<\\/p>\"],\"swift\":[\"Swift\",\"<p>\\u7248\\u672c\\uff1a<code>Swift 5.5.2<\\/code><\\/p>\\r\\n\\r\\n<p>\\u6211\\u4eec\\u901a\\u5e38\\u4fdd\\u8bc1\\u66f4\\u65b0\\u5230 <a href=\\\"https:\\/\\/swift.org\\/download\\/\\\" target=\\\"_blank\\\">Apple\\u653e\\u51fa\\u7684\\u6700\\u65b0\\u7248Swift<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u53d1\\u73b0Swift\\u4e0d\\u662f\\u6700\\u65b0\\u7248\\u7684\\uff0c\\u8bf7\\u8054\\u7cfb\\u6211\\u4eec\\uff01\\u6211\\u4eec\\u5c06\\u5c3d\\u5feb\\u66f4\\u65b0\\u3002<\\/p>\"],\"golang\":[\"Go\",\"<p>\\u7248\\u672c\\uff1a<code>Go 1.21<\\/code><\\/p>\\r\\n\\r\\n<p>\\u652f\\u6301 <a href=\\\"https:\\/\\/github.com\\/emirpasic\\/gods\\/tree\\/v1.18.1\\\" target=\\\"_blank\\\">https:\\/\\/godoc.org\\/github.com\\/emirpasic\\/gods@v1.18.1<\\/a> \\u7b2c\\u4e09\\u65b9\\u5e93\\u3002<\\/p>\"],\"python3\":[\"Python3\",\"<p>\\u7248\\u672c\\uff1a<code>Python 3.10<\\/code><\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 \\u5bfc\\u5165\\uff0c\\u5982<a href=\\\"https:\\/\\/docs.python.org\\/3\\/library\\/array.html\\\" target=\\\"_blank\\\">array<\\/a>, <a href=\\\"https:\\/\\/docs.python.org\\/3\\/library\\/bisect.html\\\" target=\\\"_blank\\\">bisect<\\/a>, <a href=\\\"https:\\/\\/docs.python.org\\/3\\/library\\/collections.html\\\" target=\\\"_blank\\\">collections<\\/a>\\u3002 \\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u5982\\u9700\\u4f7f\\u7528 Map\\/TreeMap \\u6570\\u636e\\u7ed3\\u6784\\uff0c\\u60a8\\u53ef\\u4f7f\\u7528 <a href=\\\"http:\\/\\/www.grantjenks.com\\/docs\\/sortedcontainers\\/\\\" target=\\\"_blank\\\">sortedcontainers<\\/a> \\u5e93\\u3002<\\/p>\"],\"scala\":[\"Scala\",\"<p>\\u7248\\u672c\\uff1a<code>Scala 2.13<\\/code><\\/p>\"],\"kotlin\":[\"Kotlin\",\"<p>\\u7248\\u672c\\uff1a<code>Kotlin 1.9.0<\\/code><\\/p>\\r\\n\\r\\n<p>\\u6211\\u4eec\\u4f7f\\u7528\\u7684\\u662f JetBrains \\u63d0\\u4f9b\\u7684 experimental compiler\\u3002\\u5982\\u679c\\u60a8\\u8ba4\\u4e3a\\u60a8\\u9047\\u5230\\u4e86\\u7f16\\u8bd1\\u5668\\u76f8\\u5173\\u7684\\u95ee\\u9898\\uff0c\\u8bf7\\u5411\\u6211\\u4eec\\u53cd\\u9988<\\/p>\"],\"rust\":[\"Rust\",\"<p>\\u7248\\u672c\\uff1a<code>rust 1.58.1<\\/code><\\/p>\\r\\n\\r\\n<p>\\u652f\\u6301 crates.io \\u7684 <a href=\\\"https:\\/\\/crates.io\\/crates\\/rand\\\" target=\\\"_blank\\\">rand<\\/a><\\/p>\"],\"php\":[\"PHP\",\"<p><code>PHP 8.1<\\/code>.<\\/p>\\r\\n\\r\\n<p>With bcmath module.<\\/p>\"],\"typescript\":[\"TypeScript\",\"<p>TypeScript 5.1.6<\\/p>\\r\\n\\r\\n<p>Compile Options: --alwaysStrict --strictBindCallApply --strictFunctionTypes --target ES2022<\\/p>\\r\\n\\r\\n<p><a href=\\\"https:\\/\\/lodash.com\\\" target=\\\"_blank\\\">lodash.js<\\/a> \\u5e93\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5305\\u542b\\u3002<\\/p>\\r\\n\\r\\n<p> \\u5982\\u9700\\u4f7f\\u7528\\u961f\\u5217\\/\\u4f18\\u5148\\u961f\\u5217\\uff0c\\u60a8\\u53ef\\u4f7f\\u7528 <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/priority-queue\\/tree\\/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\"> datastructures-js\\/priority-queue@5.3.0<\\/a> \\u548c <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/queue\\/tree\\/e63563025a5a805aa16928cb53bcd517bfea9230\\\" target=\\\"_blank\\\"> datastructures-js\\/queue@4.2.1<\\/a>\\u3002<\\/p>\"],\"racket\":[\"Racket\",\"<p><a href=\\\"https:\\/\\/docs.racket-lang.org\\/guide\\/performance.html#%28tech._c%29\\\" target=\\\"_blank\\\">Racket CS<\\/a> v8.3<\\/p>\\r\\n\\r\\n<p>\\u4f7f\\u7528 #lang racket<\\/p>\\r\\n\\r\\n<p>\\u5df2\\u9884\\u5148 (require data\\/gvector data\\/queue data\\/order data\\/heap). \\u82e5\\u9700\\u4f7f\\u7528\\u5176\\u5b83\\u6570\\u636e\\u7ed3\\u6784\\uff0c\\u53ef\\u81ea\\u884c require\\u3002<\\/p>\"],\"erlang\":[\"Erlang\",\"Erlang\\/OTP 24.2\"],\"elixir\":[\"Elixir\",\"Elixir 1.13.0 with Erlang\\/OTP 24.2\"],\"dart\":[\"Dart\",\"<p>Dart 2.17.3<\\/p>\\r\\n\\r\\n<p>\\u60a8\\u7684\\u4ee3\\u7801\\u5c06\\u4f1a\\u88ab\\u4e0d\\u7f16\\u8bd1\\u76f4\\u63a5\\u8fd0\\u884c<\\/p>\"]}",
            "book": null,
            "isSubscribed": false,
            "isDailyQuestion": false,
            "dailyRecordStatus": null,
            "editorType": "CKEDITOR",
            "ugcQuestionId": null,
            "style": "LEETCODE",
            "exampleTestcases": "[\"RandomizedCollection\",\"insert\",\"insert\",\"insert\",\"getRandom\",\"remove\",\"getRandom\"]\n[[],[1],[1],[2],[],[1],[]]",
            "__typename": "QuestionNode"
        }
    }
}