leetcode-problemset/leetcode/originData/frequency-tracker.json

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    "data": {
        "question": {
            "questionId": "2778",
            "questionFrontendId": "2671",
            "boundTopicId": null,
            "title": "Frequency Tracker",
            "titleSlug": "frequency-tracker",
            "content": "<p>Design a data structure that keeps track of the values in it and answers some queries regarding their frequencies.</p>\n\n<p>Implement the <code>FrequencyTracker</code> class.</p>\n\n<ul>\n\t<li><code>FrequencyTracker()</code>: Initializes the <code>FrequencyTracker</code> object with an empty array initially.</li>\n\t<li><code>void add(int number)</code>: Adds <code>number</code> to the data structure.</li>\n\t<li><code>void deleteOne(int number)</code>: Deletes <strong>one</strong> occurrence of <code>number</code> from the data structure. The data structure <strong>may not contain</strong> <code>number</code>, and in this case nothing is deleted.</li>\n\t<li><code>bool hasFrequency(int frequency)</code>: Returns <code>true</code> if there is a number in the data structure that occurs <code>frequency</code> number of times, otherwise, it returns <code>false</code>.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;FrequencyTracker&quot;, &quot;add&quot;, &quot;add&quot;, &quot;hasFrequency&quot;]\n[[], [3], [3], [2]]\n<strong>Output</strong>\n[null, null, null, true]\n\n<strong>Explanation</strong>\nFrequencyTracker frequencyTracker = new FrequencyTracker();\nfrequencyTracker.add(3); // The data structure now contains [3]\nfrequencyTracker.add(3); // The data structure now contains [3, 3]\nfrequencyTracker.hasFrequency(2); // Returns true, because 3 occurs twice\n\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;FrequencyTracker&quot;, &quot;add&quot;, &quot;deleteOne&quot;, &quot;hasFrequency&quot;]\n[[], [1], [1], [1]]\n<strong>Output</strong>\n[null, null, null, false]\n\n<strong>Explanation</strong>\nFrequencyTracker frequencyTracker = new FrequencyTracker();\nfrequencyTracker.add(1); // The data structure now contains [1]\nfrequencyTracker.deleteOne(1); // The data structure becomes empty []\nfrequencyTracker.hasFrequency(1); // Returns false, because the data structure is empty\n\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;FrequencyTracker&quot;, &quot;hasFrequency&quot;, &quot;add&quot;, &quot;hasFrequency&quot;]\n[[], [2], [3], [1]]\n<strong>Output</strong>\n[null, false, null, true]\n\n<strong>Explanation</strong>\nFrequencyTracker frequencyTracker = new FrequencyTracker();\nfrequencyTracker.hasFrequency(2); // Returns false, because the data structure is empty\nfrequencyTracker.add(3); // The data structure now contains [3]\nfrequencyTracker.hasFrequency(1); // Returns true, because 3 occurs once\n\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= number &lt;= 10<sup>5</sup></code></li>\n\t<li><code>1 &lt;= frequency &lt;= 10<sup>5</sup></code></li>\n\t<li>At most, <code>2 *&nbsp;10<sup>5</sup></code>&nbsp;calls will be made to <code>add</code>, <code>deleteOne</code>, and <code>hasFrequency</code>&nbsp;in <strong>total</strong>.</li>\n</ul>\n",
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            "difficulty": "Medium",
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            "exampleTestcases": "[\"FrequencyTracker\",\"add\",\"add\",\"hasFrequency\"]\n[[],[3],[3],[2]]\n[\"FrequencyTracker\",\"add\",\"deleteOne\",\"hasFrequency\"]\n[[],[1],[1],[1]]\n[\"FrequencyTracker\",\"hasFrequency\",\"add\",\"hasFrequency\"]\n[[],[2],[3],[1]]",
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                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "class FrequencyTracker {\npublic:\n    FrequencyTracker() {\n        \n    }\n    \n    void add(int number) {\n        \n    }\n    \n    void deleteOne(int number) {\n        \n    }\n    \n    bool hasFrequency(int frequency) {\n        \n    }\n};\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * FrequencyTracker* obj = new FrequencyTracker();\n * obj->add(number);\n * obj->deleteOne(number);\n * bool param_3 = obj->hasFrequency(frequency);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Java",
                    "langSlug": "java",
                    "code": "class FrequencyTracker {\n\n    public FrequencyTracker() {\n        \n    }\n    \n    public void add(int number) {\n        \n    }\n    \n    public void deleteOne(int number) {\n        \n    }\n    \n    public boolean hasFrequency(int frequency) {\n        \n    }\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * FrequencyTracker obj = new FrequencyTracker();\n * obj.add(number);\n * obj.deleteOne(number);\n * boolean param_3 = obj.hasFrequency(frequency);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python",
                    "langSlug": "python",
                    "code": "class FrequencyTracker(object):\n\n    def __init__(self):\n        \n\n    def add(self, number):\n        \"\"\"\n        :type number: int\n        :rtype: None\n        \"\"\"\n        \n\n    def deleteOne(self, number):\n        \"\"\"\n        :type number: int\n        :rtype: None\n        \"\"\"\n        \n\n    def hasFrequency(self, frequency):\n        \"\"\"\n        :type frequency: int\n        :rtype: bool\n        \"\"\"\n        \n\n\n# Your FrequencyTracker object will be instantiated and called as such:\n# obj = FrequencyTracker()\n# obj.add(number)\n# obj.deleteOne(number)\n# param_3 = obj.hasFrequency(frequency)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "class FrequencyTracker:\n\n    def __init__(self):\n        \n\n    def add(self, number: int) -> None:\n        \n\n    def deleteOne(self, number: int) -> None:\n        \n\n    def hasFrequency(self, frequency: int) -> bool:\n        \n\n\n# Your FrequencyTracker object will be instantiated and called as such:\n# obj = FrequencyTracker()\n# obj.add(number)\n# obj.deleteOne(number)\n# param_3 = obj.hasFrequency(frequency)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "\n\n\ntypedef struct {\n    \n} FrequencyTracker;\n\n\nFrequencyTracker* frequencyTrackerCreate() {\n    \n}\n\nvoid frequencyTrackerAdd(FrequencyTracker* obj, int number) {\n  \n}\n\nvoid frequencyTrackerDeleteOne(FrequencyTracker* obj, int number) {\n  \n}\n\nbool frequencyTrackerHasFrequency(FrequencyTracker* obj, int frequency) {\n  \n}\n\nvoid frequencyTrackerFree(FrequencyTracker* obj) {\n    \n}\n\n/**\n * Your FrequencyTracker struct will be instantiated and called as such:\n * FrequencyTracker* obj = frequencyTrackerCreate();\n * frequencyTrackerAdd(obj, number);\n \n * frequencyTrackerDeleteOne(obj, number);\n \n * bool param_3 = frequencyTrackerHasFrequency(obj, frequency);\n \n * frequencyTrackerFree(obj);\n*/",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class FrequencyTracker {\n\n    public FrequencyTracker() {\n        \n    }\n    \n    public void Add(int number) {\n        \n    }\n    \n    public void DeleteOne(int number) {\n        \n    }\n    \n    public bool HasFrequency(int frequency) {\n        \n    }\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * FrequencyTracker obj = new FrequencyTracker();\n * obj.Add(number);\n * obj.DeleteOne(number);\n * bool param_3 = obj.HasFrequency(frequency);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "\nvar FrequencyTracker = function() {\n    \n};\n\n/** \n * @param {number} number\n * @return {void}\n */\nFrequencyTracker.prototype.add = function(number) {\n    \n};\n\n/** \n * @param {number} number\n * @return {void}\n */\nFrequencyTracker.prototype.deleteOne = function(number) {\n    \n};\n\n/** \n * @param {number} frequency\n * @return {boolean}\n */\nFrequencyTracker.prototype.hasFrequency = function(frequency) {\n    \n};\n\n/** \n * Your FrequencyTracker object will be instantiated and called as such:\n * var obj = new FrequencyTracker()\n * obj.add(number)\n * obj.deleteOne(number)\n * var param_3 = obj.hasFrequency(frequency)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class FrequencyTracker {\n    constructor() {\n\n    }\n\n    add(number: number): void {\n\n    }\n\n    deleteOne(number: number): void {\n\n    }\n\n    hasFrequency(frequency: number): boolean {\n\n    }\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * var obj = new FrequencyTracker()\n * obj.add(number)\n * obj.deleteOne(number)\n * var param_3 = obj.hasFrequency(frequency)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "class FrequencyTracker {\n    /**\n     */\n    function __construct() {\n        \n    }\n  \n    /**\n     * @param Integer $number\n     * @return NULL\n     */\n    function add($number) {\n        \n    }\n  \n    /**\n     * @param Integer $number\n     * @return NULL\n     */\n    function deleteOne($number) {\n        \n    }\n  \n    /**\n     * @param Integer $frequency\n     * @return Boolean\n     */\n    function hasFrequency($frequency) {\n        \n    }\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * $obj = FrequencyTracker();\n * $obj->add($number);\n * $obj->deleteOne($number);\n * $ret_3 = $obj->hasFrequency($frequency);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "\nclass FrequencyTracker {\n\n    init() {\n        \n    }\n    \n    func add(_ number: Int) {\n        \n    }\n    \n    func deleteOne(_ number: Int) {\n        \n    }\n    \n    func hasFrequency(_ frequency: Int) -> Bool {\n        \n    }\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * let obj = FrequencyTracker()\n * obj.add(number)\n * obj.deleteOne(number)\n * let ret_3: Bool = obj.hasFrequency(frequency)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class FrequencyTracker() {\n\n    fun add(number: Int) {\n        \n    }\n\n    fun deleteOne(number: Int) {\n        \n    }\n\n    fun hasFrequency(frequency: Int): Boolean {\n        \n    }\n\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * var obj = FrequencyTracker()\n * obj.add(number)\n * obj.deleteOne(number)\n * var param_3 = obj.hasFrequency(frequency)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Dart",
                    "langSlug": "dart",
                    "code": "class FrequencyTracker {\n\n  FrequencyTracker() {\n\n  }\n  \n  void add(int number) {\n\n  }\n  \n  void deleteOne(int number) {\n\n  }\n  \n  bool hasFrequency(int frequency) {\n\n  }\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * FrequencyTracker obj = FrequencyTracker();\n * obj.add(number);\n * obj.deleteOne(number);\n * bool param3 = obj.hasFrequency(frequency);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "type FrequencyTracker struct {\n    \n}\n\n\nfunc Constructor() FrequencyTracker {\n    \n}\n\n\nfunc (this *FrequencyTracker) Add(number int)  {\n    \n}\n\n\nfunc (this *FrequencyTracker) DeleteOne(number int)  {\n    \n}\n\n\nfunc (this *FrequencyTracker) HasFrequency(frequency int) bool {\n    \n}\n\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * obj := Constructor();\n * obj.Add(number);\n * obj.DeleteOne(number);\n * param_3 := obj.HasFrequency(frequency);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "class FrequencyTracker\n    def initialize()\n        \n    end\n\n\n=begin\n    :type number: Integer\n    :rtype: Void\n=end\n    def add(number)\n        \n    end\n\n\n=begin\n    :type number: Integer\n    :rtype: Void\n=end\n    def delete_one(number)\n        \n    end\n\n\n=begin\n    :type frequency: Integer\n    :rtype: Boolean\n=end\n    def has_frequency(frequency)\n        \n    end\n\n\nend\n\n# Your FrequencyTracker object will be instantiated and called as such:\n# obj = FrequencyTracker.new()\n# obj.add(number)\n# obj.delete_one(number)\n# param_3 = obj.has_frequency(frequency)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "class FrequencyTracker() {\n\n    def add(number: Int) {\n        \n    }\n\n    def deleteOne(number: Int) {\n        \n    }\n\n    def hasFrequency(frequency: Int): Boolean = {\n        \n    }\n\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * var obj = new FrequencyTracker()\n * obj.add(number)\n * obj.deleteOne(number)\n * var param_3 = obj.hasFrequency(frequency)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "struct FrequencyTracker {\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 FrequencyTracker {\n\n    fn new() -> Self {\n        \n    }\n    \n    fn add(&self, number: i32) {\n        \n    }\n    \n    fn delete_one(&self, number: i32) {\n        \n    }\n    \n    fn has_frequency(&self, frequency: i32) -> bool {\n        \n    }\n}\n\n/**\n * Your FrequencyTracker object will be instantiated and called as such:\n * let obj = FrequencyTracker::new();\n * obj.add(number);\n * obj.delete_one(number);\n * let ret_3: bool = obj.has_frequency(frequency);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Racket",
                    "langSlug": "racket",
                    "code": "(define frequency-tracker%\n  (class object%\n    (super-new)\n    \n    (init-field)\n    \n    ; add : exact-integer? -> void?\n    (define/public (add number)\n\n      )\n    ; delete-one : exact-integer? -> void?\n    (define/public (delete-one number)\n\n      )\n    ; has-frequency : exact-integer? -> boolean?\n    (define/public (has-frequency frequency)\n\n      )))\n\n;; Your frequency-tracker% object will be instantiated and called as such:\n;; (define obj (new frequency-tracker%))\n;; (send obj add number)\n;; (send obj delete-one number)\n;; (define param_3 (send obj has-frequency frequency))",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec frequency_tracker_init_() -> any().\nfrequency_tracker_init_() ->\n  .\n\n-spec frequency_tracker_add(Number :: integer()) -> any().\nfrequency_tracker_add(Number) ->\n  .\n\n-spec frequency_tracker_delete_one(Number :: integer()) -> any().\nfrequency_tracker_delete_one(Number) ->\n  .\n\n-spec frequency_tracker_has_frequency(Frequency :: integer()) -> boolean().\nfrequency_tracker_has_frequency(Frequency) ->\n  .\n\n\n%% Your functions will be called as such:\n%% frequency_tracker_init_(),\n%% frequency_tracker_add(Number),\n%% frequency_tracker_delete_one(Number),\n%% Param_3 = frequency_tracker_has_frequency(Frequency),\n\n%% frequency_tracker_init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Elixir",
                    "langSlug": "elixir",
                    "code": "defmodule FrequencyTracker do\n  @spec init_() :: any\n  def init_() do\n\n  end\n\n  @spec add(number :: integer) :: any\n  def add(number) do\n\n  end\n\n  @spec delete_one(number :: integer) :: any\n  def delete_one(number) do\n\n  end\n\n  @spec has_frequency(frequency :: integer) :: boolean\n  def has_frequency(frequency) do\n\n  end\nend\n\n# Your functions will be called as such:\n# FrequencyTracker.init_()\n# FrequencyTracker.add(number)\n# FrequencyTracker.delete_one(number)\n# param_3 = FrequencyTracker.has_frequency(frequency)\n\n# FrequencyTracker.init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
                }
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            "hints": [
                "Put all the numbers in a hash map (or just an integer array given the number range is small) to maintain each number’s frequency dynamically.",
                "Put each frequency in another hash map (or just an integer array given the range is small, note there are only 200000 calls in total) to maintain each kind of frequency dynamically.",
                "Keep the 2 hash maps in sync."
            ],
            "solution": null,
            "status": null,
            "sampleTestCase": "[\"FrequencyTracker\",\"add\",\"add\",\"hasFrequency\"]\n[[],[3],[3],[2]]",
            "metaData": "{\n  \"classname\": \"FrequencyTracker\",\n  \"constructor\": {\n    \"params\": []\n  },\n  \"methods\": [\n    {\n      \"params\": [\n        {\n          \"type\": \"integer\",\n          \"name\": \"number\"\n        }\n      ],\n      \"name\": \"add\",\n      \"return\": {\n        \"type\": \"void\"\n      }\n    },\n    {\n      \"params\": [\n        {\n          \"type\": \"integer\",\n          \"name\": \"number\"\n        }\n      ],\n      \"name\": \"deleteOne\",\n      \"return\": {\n        \"type\": \"void\"\n      }\n    },\n    {\n      \"params\": [\n        {\n          \"type\": \"integer\",\n          \"name\": \"frequency\"\n        }\n      ],\n      \"name\": \"hasFrequency\",\n      \"return\": {\n        \"type\": \"boolean\"\n      }\n    }\n  ],\n  \"return\": {\n    \"type\": \"boolean\"\n  },\n  \"systemdesign\": true\n}",
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            "envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 20 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 gnu11 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://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-10\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></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 5.3.0 version of <a href=\\\"https://github.com/datastructures-js/priority-queue/tree/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and 4.2.1 version of <a href=\\\"https://github.com/datastructures-js/queue/tree/e63563025a5a805aa16928cb53bcd517bfea9230\\\" 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 1.21</code></p>\\r\\n<p>Support <a href=\\\"https://github.com/emirpasic/gods/tree/v1.18.1\\\" target=\\\"_blank\\\">https://godoc.org/github.com/emirpasic/gods@v1.18.1</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 1.9.0</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 5.1.6, 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 ES2022 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 25.0\"], \"elixir\": [\"Elixir\", \"Elixir 1.13.4 with Erlang/OTP 25.0\"], \"dart\": [\"Dart\", \"<p>Dart 2.17.3</p>\\r\\n\\r\\n<p>Your code will be run directly without compiling</p>\"]}",
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