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    "data": {
        "question": {
            "questionId": "969",
            "questionFrontendId": "933",
            "categoryTitle": "Algorithms",
            "boundTopicId": 2243,
            "title": "Number of Recent Calls",
            "titleSlug": "number-of-recent-calls",
            "content": "<p>You have a <code>RecentCounter</code> class which counts the number of recent requests within a certain time frame.</p>\n\n<p>Implement the <code>RecentCounter</code> class:</p>\n\n<ul>\n\t<li><code>RecentCounter()</code> Initializes the counter with zero recent requests.</li>\n\t<li><code>int ping(int t)</code> Adds a new request at time <code>t</code>, where <code>t</code> represents some time in milliseconds, and returns the number of requests that has happened in the past <code>3000</code> milliseconds (including the new request). Specifically, return the number of requests that have happened in the inclusive range <code>[t - 3000, t]</code>.</li>\n</ul>\n\n<p>It is <strong>guaranteed</strong> that every call to <code>ping</code> uses a strictly larger value of <code>t</code> than the previous call.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;RecentCounter&quot;, &quot;ping&quot;, &quot;ping&quot;, &quot;ping&quot;, &quot;ping&quot;]\n[[], [1], [100], [3001], [3002]]\n<strong>Output</strong>\n[null, 1, 2, 3, 3]\n\n<strong>Explanation</strong>\nRecentCounter recentCounter = new RecentCounter();\nrecentCounter.ping(1);     // requests = [<u>1</u>], range is [-2999,1], return 1\nrecentCounter.ping(100);   // requests = [<u>1</u>, <u>100</u>], range is [-2900,100], return 2\nrecentCounter.ping(3001);  // requests = [<u>1</u>, <u>100</u>, <u>3001</u>], range is [1,3001], return 3\nrecentCounter.ping(3002);  // requests = [1, <u>100</u>, <u>3001</u>, <u>3002</u>], range is [2,3002], return 3\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= t &lt;= 10<sup>9</sup></code></li>\n\t<li>Each test case will call <code>ping</code> with <strong>strictly increasing</strong> values of <code>t</code>.</li>\n\t<li>At most <code>10<sup>4</sup></code> calls will be made to <code>ping</code>.</li>\n</ul>\n",
            "translatedTitle": "最近的请求次数",
            "translatedContent": "<p>写一个&nbsp;<code>RecentCounter</code>&nbsp;类来计算特定时间范围内最近的请求。</p>\n\n<p>请你实现 <code>RecentCounter</code> 类：</p>\n\n<ul>\n\t<li><code>RecentCounter()</code> 初始化计数器，请求数为 0 。</li>\n\t<li><code>int ping(int t)</code> 在时间 <code>t</code> 添加一个新请求，其中 <code>t</code> 表示以毫秒为单位的某个时间，并返回过去 <code>3000</code> 毫秒内发生的所有请求数（包括新请求）。确切地说，返回在 <code>[t-3000, t]</code> 内发生的请求数。</li>\n</ul>\n\n<p><strong>保证</strong> 每次对 <code>ping</code> 的调用都使用比之前更大的 <code>t</code> 值。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>\n[\"RecentCounter\", \"ping\", \"ping\", \"ping\", \"ping\"]\n[[], [1], [100], [3001], [3002]]\n<strong>输出：</strong>\n[null, 1, 2, 3, 3]\n\n<strong>解释：</strong>\nRecentCounter recentCounter = new RecentCounter();\nrecentCounter.ping(1);     // requests = [<strong>1</strong>]，范围是 [-2999,1]，返回 1\nrecentCounter.ping(100);   // requests = [<strong>1</strong>, <strong>100</strong>]，范围是 [-2900,100]，返回 2\nrecentCounter.ping(3001);  // requests = [<strong>1</strong>, <strong>100</strong>, <strong>3001</strong>]，范围是 [1,3001]，返回 3\nrecentCounter.ping(3002);  // requests = [1, <strong>100</strong>, <strong>3001</strong>, <strong>3002</strong>]，范围是 [2,3002]，返回 3\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= t &lt;= 10<sup>9</sup></code></li>\n\t<li>保证每次对 <code>ping</code> 调用所使用的 <code>t</code> 值都 <strong>严格递增</strong></li>\n\t<li>至多调用 <code>ping</code> 方法 <code>10<sup>4</sup></code> 次</li>\n</ul>\n",
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                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "class RecentCounter {\npublic:\n    RecentCounter() {\n\n    }\n    \n    int ping(int t) {\n\n    }\n};\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * RecentCounter* obj = new RecentCounter();\n * int param_1 = obj->ping(t);\n */",
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                    "lang": "Java",
                    "langSlug": "java",
                    "code": "class RecentCounter {\n\n    public RecentCounter() {\n\n    }\n    \n    public int ping(int t) {\n\n    }\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * RecentCounter obj = new RecentCounter();\n * int param_1 = obj.ping(t);\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Python",
                    "langSlug": "python",
                    "code": "class RecentCounter(object):\n\n    def __init__(self):\n\n\n    def ping(self, t):\n        \"\"\"\n        :type t: int\n        :rtype: int\n        \"\"\"\n\n\n\n# Your RecentCounter object will be instantiated and called as such:\n# obj = RecentCounter()\n# param_1 = obj.ping(t)",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "class RecentCounter:\n\n    def __init__(self):\n\n\n    def ping(self, t: int) -> int:\n\n\n\n# Your RecentCounter object will be instantiated and called as such:\n# obj = RecentCounter()\n# param_1 = obj.ping(t)",
                    "__typename": "CodeSnippetNode"
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                    "lang": "C",
                    "langSlug": "c",
                    "code": "\n\n\ntypedef struct {\n\n} RecentCounter;\n\n\nRecentCounter* recentCounterCreate() {\n\n}\n\nint recentCounterPing(RecentCounter* obj, int t) {\n\n}\n\nvoid recentCounterFree(RecentCounter* obj) {\n\n}\n\n/**\n * Your RecentCounter struct will be instantiated and called as such:\n * RecentCounter* obj = recentCounterCreate();\n * int param_1 = recentCounterPing(obj, t);\n \n * recentCounterFree(obj);\n*/",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class RecentCounter {\n\n    public RecentCounter() {\n\n    }\n    \n    public int Ping(int t) {\n\n    }\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * RecentCounter obj = new RecentCounter();\n * int param_1 = obj.Ping(t);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "\nvar RecentCounter = function() {\n\n};\n\n/** \n * @param {number} t\n * @return {number}\n */\nRecentCounter.prototype.ping = function(t) {\n\n};\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * var obj = new RecentCounter()\n * var param_1 = obj.ping(t)\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "class RecentCounter\n    def initialize()\n\n    end\n\n\n=begin\n    :type t: Integer\n    :rtype: Integer\n=end\n    def ping(t)\n\n    end\n\n\nend\n\n# Your RecentCounter object will be instantiated and called as such:\n# obj = RecentCounter.new()\n# param_1 = obj.ping(t)",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "\nclass RecentCounter {\n\n    init() {\n\n    }\n    \n    func ping(_ t: Int) -> Int {\n\n    }\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * let obj = RecentCounter()\n * let ret_1: Int = obj.ping(t)\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "type RecentCounter struct {\n\n}\n\n\nfunc Constructor() RecentCounter {\n\n}\n\n\nfunc (this *RecentCounter) Ping(t int) int {\n\n}\n\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * obj := Constructor();\n * param_1 := obj.Ping(t);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "class RecentCounter() {\n\n    def ping(t: Int): Int = {\n\n    }\n\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * var obj = new RecentCounter()\n * var param_1 = obj.ping(t)\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class RecentCounter() {\n\n    fun ping(t: Int): Int {\n\n    }\n\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * var obj = RecentCounter()\n * var param_1 = obj.ping(t)\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "struct RecentCounter {\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 RecentCounter {\n\n    fn new() -> Self {\n\n    }\n    \n    fn ping(&self, t: i32) -> i32 {\n\n    }\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * let obj = RecentCounter::new();\n * let ret_1: i32 = obj.ping(t);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "class RecentCounter {\n    /**\n     */\n    function __construct() {\n\n    }\n\n    /**\n     * @param Integer $t\n     * @return Integer\n     */\n    function ping($t) {\n\n    }\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * $obj = RecentCounter();\n * $ret_1 = $obj->ping($t);\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class RecentCounter {\n    constructor() {\n\n    }\n\n    ping(t: number): number {\n\n    }\n}\n\n/**\n * Your RecentCounter object will be instantiated and called as such:\n * var obj = new RecentCounter()\n * var param_1 = obj.ping(t)\n */",
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                    "lang": "Racket",
                    "langSlug": "racket",
                    "code": "(define recent-counter%\n  (class object%\n    (super-new)\n    (init-field)\n    \n    ; ping : exact-integer? -> exact-integer?\n    (define/public (ping t)\n\n      )))\n\n;; Your recent-counter% object will be instantiated and called as such:\n;; (define obj (new recent-counter%))\n;; (define param_1 (send obj ping t))",
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                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec recent_counter_init_() -> any().\nrecent_counter_init_() ->\n  .\n\n-spec recent_counter_ping(T :: integer()) -> integer().\nrecent_counter_ping(T) ->\n  .\n\n\n%% Your functions will be called as such:\n%% recent_counter_init_(),\n%% Param_1 = recent_counter_ping(T),\n\n%% recent_counter_init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Elixir",
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                    "code": "defmodule RecentCounter do\n  @spec init_() :: any\n  def init_() do\n\n  end\n\n  @spec ping(t :: integer) :: integer\n  def ping(t) do\n\n  end\nend\n\n# Your functions will be called as such:\n# RecentCounter.init_()\n# param_1 = RecentCounter.ping(t)\n\n# RecentCounter.init_ will be called before every test case, in which you can do some necessary initializations.",
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href=\\\"https:\\/\\/github.com\\/datastructures-js\\/queue\\\" target=\\\"_blank\\\"> datastructures-js\\/queue<\\/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 1.17<\\/code><\\/p>\\r\\n\\r\\n<p>\\u652f\\u6301 <a href=\\\"https:\\/\\/godoc.org\\/github.com\\/emirpasic\\/gods\\\" target=\\\"_blank\\\">https:\\/\\/godoc.org\\/github.com\\/emirpasic\\/gods<\\/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 1.3.10<\\/code><\\/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 4.5.4<\\/p>\\r\\n\\r\\n<p>Compile Options: --alwaysStrict --strictBindCallApply --strictFunctionTypes --target ES2020<\\/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\"]}",
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