{ "data": { "question": { "questionId": "1000293", "questionFrontendId": "LCR 042", "categoryTitle": "Algorithms", "boundTopicId": 910220, "title": "最近的请求次数", "titleSlug": "H8086Q", "content": "
English description is not available for the problem. Please switch to Chinese.
\n", "translatedTitle": "最近的请求次数", "translatedContent": "写一个 RecentCounter
类来计算特定时间范围内最近的请求。
请实现 RecentCounter
类:
RecentCounter()
初始化计数器,请求数为 0 。int ping(int t)
在时间 t
添加一个新请求,其中 t
表示以毫秒为单位的某个时间,并返回过去 3000
毫秒内发生的所有请求数(包括新请求)。确切地说,返回在 [t-3000, t]
内发生的请求数。保证 每次对 ping
的调用都使用比之前更大的 t
值。
\n\n
示例:
\n\n\n输入:\ninputs = ["RecentCounter", "ping", "ping", "ping", "ping"]\ninputs = [[], [1], [100], [3001], [3002]]\n输出:\n[null, 1, 2, 3, 3]\n\n解释:\nRecentCounter recentCounter = new RecentCounter();\nrecentCounter.ping(1); // requests = [1],范围是 [-2999,1],返回 1\nrecentCounter.ping(100); // requests = [1, 100],范围是 [-2900,100],返回 2\nrecentCounter.ping(3001); // requests = [1, 100, 3001],范围是 [1,3001],返回 3\nrecentCounter.ping(3002); // requests = [1, 100, 3001, 3002],范围是 [2,3002],返回 3\n\n\n
\n\n
提示:
\n\n1 <= t <= 109
ping
调用所使用的 t
值都 严格递增ping
方法 104
次\n\n
注意:本题与主站 933 题相同: https://leetcode-cn.com/problems/number-of-recent-calls/
\n", "isPaidOnly": false, "difficulty": "Easy", "likes": 45, "dislikes": 0, "isLiked": null, "similarQuestions": "[]", "contributors": [ { "username": "LeetCode", "profileUrl": "/u/leetcode", "avatarUrl": "https://assets.leetcode.cn/aliyun-lc-upload/uploaded_files/2021/03/73c9f099-abbe-4d94-853f-f8abffd459cd/leetcode.png", "__typename": "ContributorNode" } ], "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": "Queue", "slug": "queue", "translatedName": "队列", "__typename": "TopicTagNode" }, { "name": "Data Stream", "slug": "data-stream", "translatedName": "数据流", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": [ { "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 */", "__typename": "CodeSnippetNode" }, { "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" }, { "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" }, { "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" }, { "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" }, { "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" }, { "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 */", "__typename": "CodeSnippetNode" }, { "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" }, { "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" }, { "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" }, { "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" }, { "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" }, { "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" }, { "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" }, { "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))", "__typename": "CodeSnippetNode" }, { "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" }, { "lang": "Elixir", "langSlug": "elixir", "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.", "__typename": "CodeSnippetNode" 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