{
    "data": {
        "question": {
            "questionId": "715",
            "questionFrontendId": "715",
            "boundTopicId": null,
            "title": "Range Module",
            "titleSlug": "range-module",
            "content": "<p>A Range Module is a module that tracks ranges of numbers. Design a data structure to track the ranges represented as <strong>half-open intervals</strong> and query about them.</p>\n\n<p>A <strong>half-open interval</strong> <code>[left, right)</code> denotes all the real numbers <code>x</code> where <code>left &lt;= x &lt; right</code>.</p>\n\n<p>Implement the <code>RangeModule</code> class:</p>\n\n<ul>\n\t<li><code>RangeModule()</code> Initializes the object of the data structure.</li>\n\t<li><code>void addRange(int left, int right)</code> Adds the <strong>half-open interval</strong> <code>[left, right)</code>, tracking every real number in that interval. Adding an interval that partially overlaps with currently tracked numbers should add any numbers in the interval <code>[left, right)</code> that are not already tracked.</li>\n\t<li><code>boolean queryRange(int left, int right)</code> Returns <code>true</code> if every real number in the interval <code>[left, right)</code> is currently being tracked, and <code>false</code> otherwise.</li>\n\t<li><code>void removeRange(int left, int right)</code> Stops tracking every real number currently being tracked in the <strong>half-open interval</strong> <code>[left, right)</code>.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;RangeModule&quot;, &quot;addRange&quot;, &quot;removeRange&quot;, &quot;queryRange&quot;, &quot;queryRange&quot;, &quot;queryRange&quot;]\n[[], [10, 20], [14, 16], [10, 14], [13, 15], [16, 17]]\n<strong>Output</strong>\n[null, null, null, true, false, true]\n\n<strong>Explanation</strong>\nRangeModule rangeModule = new RangeModule();\nrangeModule.addRange(10, 20);\nrangeModule.removeRange(14, 16);\nrangeModule.queryRange(10, 14); // return True,(Every number in [10, 14) is being tracked)\nrangeModule.queryRange(13, 15); // return False,(Numbers like 14, 14.03, 14.17 in [13, 15) are not being tracked)\nrangeModule.queryRange(16, 17); // return True, (The number 16 in [16, 17) is still being tracked, despite the remove operation)\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= left &lt; right &lt;= 10<sup>9</sup></code></li>\n\t<li>At most <code>10<sup>4</sup></code> calls will be made to <code>addRange</code>, <code>queryRange</code>, and <code>removeRange</code>.</li>\n</ul>\n",
            "translatedTitle": null,
            "translatedContent": null,
            "isPaidOnly": false,
            "difficulty": "Hard",
            "likes": 892,
            "dislikes": 69,
            "isLiked": null,
            "similarQuestions": "[{\"title\": \"Merge Intervals\", \"titleSlug\": \"merge-intervals\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Insert Interval\", \"titleSlug\": \"insert-interval\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Data Stream as Disjoint Intervals\", \"titleSlug\": \"data-stream-as-disjoint-intervals\", \"difficulty\": \"Hard\", \"translatedTitle\": null}]",
            "exampleTestcases": "[\"RangeModule\",\"addRange\",\"removeRange\",\"queryRange\",\"queryRange\",\"queryRange\"]\n[[],[10,20],[14,16],[10,14],[13,15],[16,17]]",
            "categoryTitle": "Algorithms",
            "contributors": [],
            "topicTags": [
                {
                    "name": "Design",
                    "slug": "design",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Segment Tree",
                    "slug": "segment-tree",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Ordered Set",
                    "slug": "ordered-set",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": [
                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "class RangeModule {\npublic:\n    RangeModule() {\n        \n    }\n    \n    void addRange(int left, int right) {\n        \n    }\n    \n    bool queryRange(int left, int right) {\n        \n    }\n    \n    void removeRange(int left, int right) {\n        \n    }\n};\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * RangeModule* obj = new RangeModule();\n * obj->addRange(left,right);\n * bool param_2 = obj->queryRange(left,right);\n * obj->removeRange(left,right);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Java",
                    "langSlug": "java",
                    "code": "class RangeModule {\n\n    public RangeModule() {\n        \n    }\n    \n    public void addRange(int left, int right) {\n        \n    }\n    \n    public boolean queryRange(int left, int right) {\n        \n    }\n    \n    public void removeRange(int left, int right) {\n        \n    }\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * RangeModule obj = new RangeModule();\n * obj.addRange(left,right);\n * boolean param_2 = obj.queryRange(left,right);\n * obj.removeRange(left,right);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python",
                    "langSlug": "python",
                    "code": "class RangeModule(object):\n\n    def __init__(self):\n        \n\n    def addRange(self, left, right):\n        \"\"\"\n        :type left: int\n        :type right: int\n        :rtype: None\n        \"\"\"\n        \n\n    def queryRange(self, left, right):\n        \"\"\"\n        :type left: int\n        :type right: int\n        :rtype: bool\n        \"\"\"\n        \n\n    def removeRange(self, left, right):\n        \"\"\"\n        :type left: int\n        :type right: int\n        :rtype: None\n        \"\"\"\n        \n\n\n# Your RangeModule object will be instantiated and called as such:\n# obj = RangeModule()\n# obj.addRange(left,right)\n# param_2 = obj.queryRange(left,right)\n# obj.removeRange(left,right)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "class RangeModule:\n\n    def __init__(self):\n        \n\n    def addRange(self, left: int, right: int) -> None:\n        \n\n    def queryRange(self, left: int, right: int) -> bool:\n        \n\n    def removeRange(self, left: int, right: int) -> None:\n        \n\n\n# Your RangeModule object will be instantiated and called as such:\n# obj = RangeModule()\n# obj.addRange(left,right)\n# param_2 = obj.queryRange(left,right)\n# obj.removeRange(left,right)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "\n\n\ntypedef struct {\n    \n} RangeModule;\n\n\nRangeModule* rangeModuleCreate() {\n    \n}\n\nvoid rangeModuleAddRange(RangeModule* obj, int left, int right) {\n  \n}\n\nbool rangeModuleQueryRange(RangeModule* obj, int left, int right) {\n  \n}\n\nvoid rangeModuleRemoveRange(RangeModule* obj, int left, int right) {\n  \n}\n\nvoid rangeModuleFree(RangeModule* obj) {\n    \n}\n\n/**\n * Your RangeModule struct will be instantiated and called as such:\n * RangeModule* obj = rangeModuleCreate();\n * rangeModuleAddRange(obj, left, right);\n \n * bool param_2 = rangeModuleQueryRange(obj, left, right);\n \n * rangeModuleRemoveRange(obj, left, right);\n \n * rangeModuleFree(obj);\n*/",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class RangeModule {\n\n    public RangeModule() {\n        \n    }\n    \n    public void AddRange(int left, int right) {\n        \n    }\n    \n    public bool QueryRange(int left, int right) {\n        \n    }\n    \n    public void RemoveRange(int left, int right) {\n        \n    }\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * RangeModule obj = new RangeModule();\n * obj.AddRange(left,right);\n * bool param_2 = obj.QueryRange(left,right);\n * obj.RemoveRange(left,right);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "\nvar RangeModule = function() {\n    \n};\n\n/** \n * @param {number} left \n * @param {number} right\n * @return {void}\n */\nRangeModule.prototype.addRange = function(left, right) {\n    \n};\n\n/** \n * @param {number} left \n * @param {number} right\n * @return {boolean}\n */\nRangeModule.prototype.queryRange = function(left, right) {\n    \n};\n\n/** \n * @param {number} left \n * @param {number} right\n * @return {void}\n */\nRangeModule.prototype.removeRange = function(left, right) {\n    \n};\n\n/** \n * Your RangeModule object will be instantiated and called as such:\n * var obj = new RangeModule()\n * obj.addRange(left,right)\n * var param_2 = obj.queryRange(left,right)\n * obj.removeRange(left,right)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "class RangeModule\n    def initialize()\n        \n    end\n\n\n=begin\n    :type left: Integer\n    :type right: Integer\n    :rtype: Void\n=end\n    def add_range(left, right)\n        \n    end\n\n\n=begin\n    :type left: Integer\n    :type right: Integer\n    :rtype: Boolean\n=end\n    def query_range(left, right)\n        \n    end\n\n\n=begin\n    :type left: Integer\n    :type right: Integer\n    :rtype: Void\n=end\n    def remove_range(left, right)\n        \n    end\n\n\nend\n\n# Your RangeModule object will be instantiated and called as such:\n# obj = RangeModule.new()\n# obj.add_range(left, right)\n# param_2 = obj.query_range(left, right)\n# obj.remove_range(left, right)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "\nclass RangeModule {\n\n    init() {\n        \n    }\n    \n    func addRange(_ left: Int, _ right: Int) {\n        \n    }\n    \n    func queryRange(_ left: Int, _ right: Int) -> Bool {\n        \n    }\n    \n    func removeRange(_ left: Int, _ right: Int) {\n        \n    }\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * let obj = RangeModule()\n * obj.addRange(left, right)\n * let ret_2: Bool = obj.queryRange(left, right)\n * obj.removeRange(left, right)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "type RangeModule struct {\n    \n}\n\n\nfunc Constructor() RangeModule {\n    \n}\n\n\nfunc (this *RangeModule) AddRange(left int, right int)  {\n    \n}\n\n\nfunc (this *RangeModule) QueryRange(left int, right int) bool {\n    \n}\n\n\nfunc (this *RangeModule) RemoveRange(left int, right int)  {\n    \n}\n\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * obj := Constructor();\n * obj.AddRange(left,right);\n * param_2 := obj.QueryRange(left,right);\n * obj.RemoveRange(left,right);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "class RangeModule() {\n\n    def addRange(left: Int, right: Int) {\n        \n    }\n\n    def queryRange(left: Int, right: Int): Boolean = {\n        \n    }\n\n    def removeRange(left: Int, right: Int) {\n        \n    }\n\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * var obj = new RangeModule()\n * obj.addRange(left,right)\n * var param_2 = obj.queryRange(left,right)\n * obj.removeRange(left,right)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class RangeModule() {\n\n    fun addRange(left: Int, right: Int) {\n        \n    }\n\n    fun queryRange(left: Int, right: Int): Boolean {\n        \n    }\n\n    fun removeRange(left: Int, right: Int) {\n        \n    }\n\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * var obj = RangeModule()\n * obj.addRange(left,right)\n * var param_2 = obj.queryRange(left,right)\n * obj.removeRange(left,right)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "struct RangeModule {\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 RangeModule {\n\n    fn new() -> Self {\n        \n    }\n    \n    fn add_range(&self, left: i32, right: i32) {\n        \n    }\n    \n    fn query_range(&self, left: i32, right: i32) -> bool {\n        \n    }\n    \n    fn remove_range(&self, left: i32, right: i32) {\n        \n    }\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * let obj = RangeModule::new();\n * obj.add_range(left, right);\n * let ret_2: bool = obj.query_range(left, right);\n * obj.remove_range(left, right);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "class RangeModule {\n    /**\n     */\n    function __construct() {\n        \n    }\n  \n    /**\n     * @param Integer $left\n     * @param Integer $right\n     * @return NULL\n     */\n    function addRange($left, $right) {\n        \n    }\n  \n    /**\n     * @param Integer $left\n     * @param Integer $right\n     * @return Boolean\n     */\n    function queryRange($left, $right) {\n        \n    }\n  \n    /**\n     * @param Integer $left\n     * @param Integer $right\n     * @return NULL\n     */\n    function removeRange($left, $right) {\n        \n    }\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * $obj = RangeModule();\n * $obj->addRange($left, $right);\n * $ret_2 = $obj->queryRange($left, $right);\n * $obj->removeRange($left, $right);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class RangeModule {\n    constructor() {\n\n    }\n\n    addRange(left: number, right: number): void {\n\n    }\n\n    queryRange(left: number, right: number): boolean {\n\n    }\n\n    removeRange(left: number, right: number): void {\n\n    }\n}\n\n/**\n * Your RangeModule object will be instantiated and called as such:\n * var obj = new RangeModule()\n * obj.addRange(left,right)\n * var param_2 = obj.queryRange(left,right)\n * obj.removeRange(left,right)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Racket",
                    "langSlug": "racket",
                    "code": "(define range-module%\n  (class object%\n    (super-new)\n    (init-field)\n    \n    ; add-range : exact-integer? exact-integer? -> void?\n    (define/public (add-range left right)\n\n      )\n    ; query-range : exact-integer? exact-integer? -> boolean?\n    (define/public (query-range left right)\n\n      )\n    ; remove-range : exact-integer? exact-integer? -> void?\n    (define/public (remove-range left right)\n\n      )))\n\n;; Your range-module% object will be instantiated and called as such:\n;; (define obj (new range-module%))\n;; (send obj add-range left right)\n;; (define param_2 (send obj query-range left right))\n;; (send obj remove-range left right)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec range_module_init_() -> any().\nrange_module_init_() ->\n  .\n\n-spec range_module_add_range(Left :: integer(), Right :: integer()) -> any().\nrange_module_add_range(Left, Right) ->\n  .\n\n-spec range_module_query_range(Left :: integer(), Right :: integer()) -> boolean().\nrange_module_query_range(Left, Right) ->\n  .\n\n-spec range_module_remove_range(Left :: integer(), Right :: integer()) -> any().\nrange_module_remove_range(Left, Right) ->\n  .\n\n\n%% Your functions will be called as such:\n%% range_module_init_(),\n%% range_module_add_range(Left, Right),\n%% Param_2 = range_module_query_range(Left, Right),\n%% range_module_remove_range(Left, Right),\n\n%% range_module_init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Elixir",
                    "langSlug": "elixir",
                    "code": "defmodule RangeModule do\n  @spec init_() :: any\n  def init_() do\n\n  end\n\n  @spec add_range(left :: integer, right :: integer) :: any\n  def add_range(left, right) do\n\n  end\n\n  @spec query_range(left :: integer, right :: integer) :: boolean\n  def query_range(left, right) do\n\n  end\n\n  @spec remove_range(left :: integer, right :: integer) :: any\n  def remove_range(left, right) do\n\n  end\nend\n\n# Your functions will be called as such:\n# RangeModule.init_()\n# RangeModule.add_range(left, right)\n# param_2 = RangeModule.query_range(left, right)\n# RangeModule.remove_range(left, right)\n\n# RangeModule.init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
                }
            ],
            "stats": "{\"totalAccepted\": \"42.2K\", \"totalSubmission\": \"97.3K\", \"totalAcceptedRaw\": 42221, \"totalSubmissionRaw\": 97257, \"acRate\": \"43.4%\"}",
            "hints": [
                "Maintain a sorted set of disjoint intervals.  addRange and removeRange can be performed with time complexity linear to the size of this set; queryRange can be performed with time complexity logarithmic to the size of this set."
            ],
            "solution": null,
            "status": null,
            "sampleTestCase": "[\"RangeModule\",\"addRange\",\"removeRange\",\"queryRange\",\"queryRange\",\"queryRange\"]\n[[],[10,20],[14,16],[10,14],[13,15],[16,17]]",
            "metaData": "{\r\n    \"classname\": \"RangeModule\",\r\n    \"constructor\": {\r\n        \"params\": []\r\n    },\r\n    \"methods\": [\r\n        {\r\n            \"name\" : \"addRange\",\r\n            \"params\": [\r\n                {\r\n                    \"type\": \"integer\",\r\n                    \"name\": \"left\"\r\n                },\r\n                {\r\n                    \"type\": \"integer\",\r\n                    \"name\": \"right\"\r\n                }\r\n            ],\r\n            \"return\": {\r\n                \"type\": \"void\"\r\n            }\r\n        },\r\n        {\r\n            \"name\" : \"queryRange\",\r\n            \"params\": [\r\n                {\r\n                    \"type\": \"integer\",\r\n                    \"name\": \"left\"\r\n                },\r\n                {\r\n                    \"type\": \"integer\",\r\n                    \"name\": \"right\"\r\n                }\r\n            ],\r\n            \"return\": {\r\n                \"type\": \"boolean\"\r\n            }\r\n        },\r\n        {\r\n            \"name\" : \"removeRange\",\r\n            \"params\": [\r\n                {\r\n                    \"type\": \"integer\",\r\n                    \"name\": \"left\"\r\n                },\r\n                {\r\n                    \"type\": \"integer\",\r\n                    \"name\": \"right\"\r\n                }\r\n            ],\r\n            \"return\": {\r\n                \"type\": \"void\"\r\n            }\r\n        }\r\n    ],\r\n    \"systemdesign\": true,\r\n    \"params\": [\r\n        {\r\n            \"name\": \"lefts\",\r\n            \"type\": \"integer[]\"\r\n        },\r\n        {\r\n            \"name\": \"rights\",\r\n            \"type\": \"integer[]\"\r\n        }\r\n    ],\r\n    \"return\": {\r\n        \"type\": \"list<String>\",\r\n        \"dealloc\": true\r\n    }\r\n}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [],
            "enableRunCode": true,
            "enableTestMode": false,
            "enableDebugger": true,
            "envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 17 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\"], \"java\": [\"Java\", \"<p><code> OpenJDK 17 </code>. Java 8 features such as lambda expressions and stream API can be used. </p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>\"], \"python\": [\"Python\", \"<p><code>Python 2.7.12</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <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>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\\r\\n\\r\\n<p>Note that Python 2.7 <a href=\\\"https://www.python.org/dev/peps/pep-0373/\\\" target=\\\"_blank\\\">will not be maintained past 2020</a>. For the latest Python, please choose Python3 instead.</p>\"], \"c\": [\"C\", \"<p>Compiled with <code>gcc 8.2</code> using the gnu99 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level one optimization (<code>-O1</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n\\r\\n<p>For hash table operations, you may use <a href=\\\"https://troydhanson.github.io/uthash/\\\" target=\\\"_blank\\\">uthash</a>. \\\"uthash.h\\\" is included by default. Below are some examples:</p>\\r\\n\\r\\n<p><b>1. Adding an item to a hash.</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. Looking up an item in a hash:</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. Deleting an item in a hash:</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 with .NET 6 runtime</a></p>\\r\\n\\r\\n<p>Your code is compiled with debug flag enabled (<code>/debug</code>).</p>\"], \"javascript\": [\"JavaScript\", \"<p><code>Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES6 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\\r\\n\\r\\n<p>For Priority Queue / Queue data structures, you may use <a href=\\\"https://github.com/datastructures-js/priority-queue\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and <a href=\\\"https://github.com/datastructures-js/queue\\\" target=\\\"_blank\\\">datastructures-js/queue</a>.</p>\"], \"ruby\": [\"Ruby\", \"<p><code>Ruby 3.1</code></p>\\r\\n\\r\\n<p>Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms</p>\"], \"swift\": [\"Swift\", \"<p><code>Swift 5.5.2</code>.</p>\"], \"golang\": [\"Go\", \"<p><code>Go 1.17.6</code>.</p>\\r\\n\\r\\n<p>Support <a href=\\\"https://godoc.org/github.com/emirpasic/gods\\\" target=\\\"_blank\\\">https://godoc.org/github.com/emirpasic/gods</a> library.</p>\"], \"python3\": [\"Python3\", \"<p><code>Python 3.10</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <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>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\"], \"scala\": [\"Scala\", \"<p><code>Scala 2.13.7</code>.</p>\"], \"kotlin\": [\"Kotlin\", \"<p><code>Kotlin 1.3.10</code>.</p>\"], \"rust\": [\"Rust\", \"<p><code>Rust 1.58.1</code></p>\\r\\n\\r\\n<p>Supports <a href=\\\"https://crates.io/crates/rand\\\" target=\\\"_blank\\\">rand </a> v0.6\\u00a0from crates.io</p>\"], \"php\": [\"PHP\", \"<p><code>PHP 8.1</code>.</p>\\r\\n<p>With bcmath module</p>\"], \"typescript\": [\"Typescript\", \"<p><code>TypeScript 4.5.4, Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES2020 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\"], \"racket\": [\"Racket\", \"<p>Run with <code>Racket 8.3</code>.</p>\"], \"erlang\": [\"Erlang\", \"Erlang/OTP 24.2\"], \"elixir\": [\"Elixir\", \"Elixir 1.13.0 with Erlang/OTP 24.2\"]}",
            "libraryUrl": null,
            "adminUrl": null,
            "challengeQuestion": null,
            "__typename": "QuestionNode"
        }
    }
}