mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
173 lines
38 KiB
JSON
173 lines
38 KiB
JSON
{
|
||
"data": {
|
||
"question": {
|
||
"questionId": "1905",
|
||
"questionFrontendId": "1797",
|
||
"categoryTitle": "Algorithms",
|
||
"boundTopicId": 665389,
|
||
"title": "Design Authentication Manager",
|
||
"titleSlug": "design-authentication-manager",
|
||
"content": "<p>There is an authentication system that works with authentication tokens. For each session, the user will receive a new authentication token that will expire <code>timeToLive</code> seconds after the <code>currentTime</code>. If the token is renewed, the expiry time will be <b>extended</b> to expire <code>timeToLive</code> seconds after the (potentially different) <code>currentTime</code>.</p>\n\n<p>Implement the <code>AuthenticationManager</code> class:</p>\n\n<ul>\n\t<li><code>AuthenticationManager(int timeToLive)</code> constructs the <code>AuthenticationManager</code> and sets the <code>timeToLive</code>.</li>\n\t<li><code>generate(string tokenId, int currentTime)</code> generates a new token with the given <code>tokenId</code> at the given <code>currentTime</code> in seconds.</li>\n\t<li><code>renew(string tokenId, int currentTime)</code> renews the <strong>unexpired</strong> token with the given <code>tokenId</code> at the given <code>currentTime</code> in seconds. If there are no unexpired tokens with the given <code>tokenId</code>, the request is ignored, and nothing happens.</li>\n\t<li><code>countUnexpiredTokens(int currentTime)</code> returns the number of <strong>unexpired</strong> tokens at the given currentTime.</li>\n</ul>\n\n<p>Note that if a token expires at time <code>t</code>, and another action happens on time <code>t</code> (<code>renew</code> or <code>countUnexpiredTokens</code>), the expiration takes place <strong>before</strong> the other actions.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/02/25/copy-of-pc68_q2.png\" style=\"width: 500px; height: 287px;\" />\n<pre>\n<strong>Input</strong>\n["AuthenticationManager", "<code>renew</code>", "generate", "<code>countUnexpiredTokens</code>", "generate", "<code>renew</code>", "<code>renew</code>", "<code>countUnexpiredTokens</code>"]\n[[5], ["aaa", 1], ["aaa", 2], [6], ["bbb", 7], ["aaa", 8], ["bbb", 10], [15]]\n<strong>Output</strong>\n[null, null, null, 1, null, null, null, 0]\n\n<strong>Explanation</strong>\nAuthenticationManager authenticationManager = new AuthenticationManager(5); // Constructs the AuthenticationManager with <code>timeToLive</code> = 5 seconds.\nauthenticationManager.<code>renew</code>("aaa", 1); // No token exists with tokenId "aaa" at time 1, so nothing happens.\nauthenticationManager.generate("aaa", 2); // Generates a new token with tokenId "aaa" at time 2.\nauthenticationManager.<code>countUnexpiredTokens</code>(6); // The token with tokenId "aaa" is the only unexpired one at time 6, so return 1.\nauthenticationManager.generate("bbb", 7); // Generates a new token with tokenId "bbb" at time 7.\nauthenticationManager.<code>renew</code>("aaa", 8); // The token with tokenId "aaa" expired at time 7, and 8 >= 7, so at time 8 the <code>renew</code> request is ignored, and nothing happens.\nauthenticationManager.<code>renew</code>("bbb", 10); // The token with tokenId "bbb" is unexpired at time 10, so the <code>renew</code> request is fulfilled and now the token will expire at time 15.\nauthenticationManager.<code>countUnexpiredTokens</code>(15); // The token with tokenId "bbb" expires at time 15, and the token with tokenId "aaa" expired at time 7, so currently no token is unexpired, so return 0.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= timeToLive <= 10<sup>8</sup></code></li>\n\t<li><code>1 <= currentTime <= 10<sup>8</sup></code></li>\n\t<li><code>1 <= tokenId.length <= 5</code></li>\n\t<li><code>tokenId</code> consists only of lowercase letters.</li>\n\t<li>All calls to <code>generate</code> will contain unique values of <code>tokenId</code>.</li>\n\t<li>The values of <code>currentTime</code> across all the function calls will be <strong>strictly increasing</strong>.</li>\n\t<li>At most <code>2000</code> calls will be made to all functions combined.</li>\n</ul>\n",
|
||
"translatedTitle": "设计一个验证系统",
|
||
"translatedContent": "<p>你需要设计一个包含验证码的验证系统。每一次验证中，用户会收到一个新的验证码，这个验证码在 <code>currentTime</code> 时刻之后 <code>timeToLive</code> 秒过期。如果验证码被更新了，那么它会在 <code>currentTime</code> （可能与之前的 <code>currentTime</code> 不同）时刻延长 <code>timeToLive</code> 秒。</p>\n\n<p>请你实现 <code>AuthenticationManager</code> 类：</p>\n\n<ul>\n\t<li><code>AuthenticationManager(int timeToLive)</code> 构造 <code>AuthenticationManager</code> 并设置 <code>timeToLive</code> 参数。</li>\n\t<li><code>generate(string tokenId, int currentTime)</code> 给定 <code>tokenId</code> ，在当前时间 <code>currentTime</code> 生成一个新的验证码。</li>\n\t<li><code>renew(string tokenId, int currentTime)</code> 将给定 <code>tokenId</code> 且 <strong>未过期</strong> 的验证码在 <code>currentTime</code> 时刻更新。如果给定 <code>tokenId</code> 对应的验证码不存在或已过期，请你忽略该操作，不会有任何更新操作发生。</li>\n\t<li><code>countUnexpiredTokens(int currentTime)</code> 请返回在给定 <code>currentTime</code> 时刻，<strong>未过期</strong> 的验证码数目。</li>\n</ul>\n\n<p>如果一个验证码在时刻 <code>t</code> 过期，且另一个操作恰好在时刻 <code>t</code> 发生（<code>renew</code> 或者 <code>countUnexpiredTokens</code> 操作），过期事件 <strong>优先于</strong> 其他操作。</p>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/02/25/copy-of-pc68_q2.png\" style=\"width: 500px; height: 287px;\" />\n<pre>\n<strong>输入：</strong>\n[\"AuthenticationManager\", \"<code>renew</code>\", \"generate\", \"<code>countUnexpiredTokens</code>\", \"generate\", \"<code>renew</code>\", \"<code>renew</code>\", \"<code>countUnexpiredTokens</code>\"]\n[[5], [\"aaa\", 1], [\"aaa\", 2], [6], [\"bbb\", 7], [\"aaa\", 8], [\"bbb\", 10], [15]]\n<strong>输出：</strong>\n[null, null, null, 1, null, null, null, 0]\n\n<strong>解释：</strong>\nAuthenticationManager authenticationManager = new AuthenticationManager(5); // 构造 AuthenticationManager ，设置 <code>timeToLive</code> = 5 秒。\nauthenticationManager.<code>renew</code>(\"aaa\", 1); // 时刻 1 时，没有验证码的 tokenId 为 \"aaa\" ，没有验证码被更新。\nauthenticationManager.generate(\"aaa\", 2); // 时刻 2 时，生成一个 tokenId 为 \"aaa\" 的新验证码。\nauthenticationManager.<code>countUnexpiredTokens</code>(6); // 时刻 6 时，只有 tokenId 为 \"aaa\" 的验证码未过期，所以返回 1 。\nauthenticationManager.generate(\"bbb\", 7); // 时刻 7 时，生成一个 tokenId 为 \"bbb\" 的新验证码。\nauthenticationManager.<code>renew</code>(\"aaa\", 8); // tokenId 为 \"aaa\" 的验证码在时刻 7 过期，且 8 >= 7 ，所以时刻 8 的renew 操作被忽略，没有验证码被更新。\nauthenticationManager.<code>renew</code>(\"bbb\", 10); // tokenId 为 \"bbb\" 的验证码在时刻 10 没有过期，所以 renew 操作会执行，该 token 将在时刻 15 过期。\nauthenticationManager.<code>countUnexpiredTokens</code>(15); // tokenId 为 \"bbb\" 的验证码在时刻 15 过期，tokenId 为 \"aaa\" 的验证码在时刻 7 过期，所有验证码均已过期，所以返回 0 。\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 <= timeToLive <= 10<sup>8</sup></code></li>\n\t<li><code>1 <= currentTime <= 10<sup>8</sup></code></li>\n\t<li><code>1 <= tokenId.length <= 5</code></li>\n\t<li><code>tokenId</code> 只包含小写英文字母。</li>\n\t<li>所有 <code>generate</code> 函数的调用都会包含独一无二的 <code>tokenId</code> 值。</li>\n\t<li>所有函数调用中，<code>currentTime</code> 的值 <strong>严格递增</strong> 。</li>\n\t<li>所有函数的调用次数总共不超过 <code>2000</code> 次。</li>\n</ul>\n",
|
||
"isPaidOnly": false,
|
||
"difficulty": "Medium",
|
||
"likes": 15,
|
||
"dislikes": 0,
|
||
"isLiked": null,
|
||
"similarQuestions": "[]",
|
||
"contributors": [],
|
||
"langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python\": false, \"python3\": false, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"ruby\": false, \"bash\": false, \"swift\": false, \"golang\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"kotlin\": false, \"rust\": false, \"php\": false, \"typescript\": false, \"racket\": false, \"erlang\": false, \"elixir\": false}",
|
||
"topicTags": [
|
||
{
|
||
"name": "Design",
|
||
"slug": "design",
|
||
"translatedName": "设计",
|
||
"__typename": "TopicTagNode"
|
||
},
|
||
{
|
||
"name": "Hash Table",
|
||
"slug": "hash-table",
|
||
"translatedName": "哈希表",
|
||
"__typename": "TopicTagNode"
|
||
}
|
||
],
|
||
"companyTagStats": null,
|
||
"codeSnippets": [
|
||
{
|
||
"lang": "C++",
|
||
"langSlug": "cpp",
|
||
"code": "class AuthenticationManager {\npublic:\n AuthenticationManager(int timeToLive) {\n\n }\n \n void generate(string tokenId, int currentTime) {\n\n }\n \n void renew(string tokenId, int currentTime) {\n\n }\n \n int countUnexpiredTokens(int currentTime) {\n\n }\n};\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * AuthenticationManager* obj = new AuthenticationManager(timeToLive);\n * obj->generate(tokenId,currentTime);\n * obj->renew(tokenId,currentTime);\n * int param_3 = obj->countUnexpiredTokens(currentTime);\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Java",
|
||
"langSlug": "java",
|
||
"code": "class AuthenticationManager {\n\n public AuthenticationManager(int timeToLive) {\n\n }\n \n public void generate(String tokenId, int currentTime) {\n\n }\n \n public void renew(String tokenId, int currentTime) {\n\n }\n \n public int countUnexpiredTokens(int currentTime) {\n\n }\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * AuthenticationManager obj = new AuthenticationManager(timeToLive);\n * obj.generate(tokenId,currentTime);\n * obj.renew(tokenId,currentTime);\n * int param_3 = obj.countUnexpiredTokens(currentTime);\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Python",
|
||
"langSlug": "python",
|
||
"code": "class AuthenticationManager(object):\n\n def __init__(self, timeToLive):\n \"\"\"\n :type timeToLive: int\n \"\"\"\n\n\n def generate(self, tokenId, currentTime):\n \"\"\"\n :type tokenId: str\n :type currentTime: int\n :rtype: None\n \"\"\"\n\n\n def renew(self, tokenId, currentTime):\n \"\"\"\n :type tokenId: str\n :type currentTime: int\n :rtype: None\n \"\"\"\n\n\n def countUnexpiredTokens(self, currentTime):\n \"\"\"\n :type currentTime: int\n :rtype: int\n \"\"\"\n\n\n\n# Your AuthenticationManager object will be instantiated and called as such:\n# obj = AuthenticationManager(timeToLive)\n# obj.generate(tokenId,currentTime)\n# obj.renew(tokenId,currentTime)\n# param_3 = obj.countUnexpiredTokens(currentTime)",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Python3",
|
||
"langSlug": "python3",
|
||
"code": "class AuthenticationManager:\n\n def __init__(self, timeToLive: int):\n\n\n def generate(self, tokenId: str, currentTime: int) -> None:\n\n\n def renew(self, tokenId: str, currentTime: int) -> None:\n\n\n def countUnexpiredTokens(self, currentTime: int) -> int:\n\n\n\n# Your AuthenticationManager object will be instantiated and called as such:\n# obj = AuthenticationManager(timeToLive)\n# obj.generate(tokenId,currentTime)\n# obj.renew(tokenId,currentTime)\n# param_3 = obj.countUnexpiredTokens(currentTime)",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "C",
|
||
"langSlug": "c",
|
||
"code": "\n\n\ntypedef struct {\n \n} AuthenticationManager;\n\n\nAuthenticationManager* authenticationManagerCreate(int timeToLive) {\n \n}\n\nvoid authenticationManagerGenerate(AuthenticationManager* obj, char * tokenId, int currentTime) {\n \n}\n\nvoid authenticationManagerRenew(AuthenticationManager* obj, char * tokenId, int currentTime) {\n \n}\n\nint authenticationManagerCountUnexpiredTokens(AuthenticationManager* obj, int currentTime) {\n \n}\n\nvoid authenticationManagerFree(AuthenticationManager* obj) {\n \n}\n\n/**\n * Your AuthenticationManager struct will be instantiated and called as such:\n * AuthenticationManager* obj = authenticationManagerCreate(timeToLive);\n * authenticationManagerGenerate(obj, tokenId, currentTime);\n \n * authenticationManagerRenew(obj, tokenId, currentTime);\n \n * int param_3 = authenticationManagerCountUnexpiredTokens(obj, currentTime);\n \n * authenticationManagerFree(obj);\n*/",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "C#",
|
||
"langSlug": "csharp",
|
||
"code": "public class AuthenticationManager {\n\n public AuthenticationManager(int timeToLive) {\n\n }\n \n public void Generate(string tokenId, int currentTime) {\n\n }\n \n public void Renew(string tokenId, int currentTime) {\n\n }\n \n public int CountUnexpiredTokens(int currentTime) {\n\n }\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * AuthenticationManager obj = new AuthenticationManager(timeToLive);\n * obj.Generate(tokenId,currentTime);\n * obj.Renew(tokenId,currentTime);\n * int param_3 = obj.CountUnexpiredTokens(currentTime);\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "JavaScript",
|
||
"langSlug": "javascript",
|
||
"code": "/**\n * @param {number} timeToLive\n */\nvar AuthenticationManager = function(timeToLive) {\n\n};\n\n/** \n * @param {string} tokenId \n * @param {number} currentTime\n * @return {void}\n */\nAuthenticationManager.prototype.generate = function(tokenId, currentTime) {\n\n};\n\n/** \n * @param {string} tokenId \n * @param {number} currentTime\n * @return {void}\n */\nAuthenticationManager.prototype.renew = function(tokenId, currentTime) {\n\n};\n\n/** \n * @param {number} currentTime\n * @return {number}\n */\nAuthenticationManager.prototype.countUnexpiredTokens = function(currentTime) {\n\n};\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * var obj = new AuthenticationManager(timeToLive)\n * obj.generate(tokenId,currentTime)\n * obj.renew(tokenId,currentTime)\n * var param_3 = obj.countUnexpiredTokens(currentTime)\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Ruby",
|
||
"langSlug": "ruby",
|
||
"code": "class AuthenticationManager\n\n=begin\n :type time_to_live: Integer\n=end\n def initialize(time_to_live)\n\n end\n\n\n=begin\n :type token_id: String\n :type current_time: Integer\n :rtype: Void\n=end\n def generate(token_id, current_time)\n\n end\n\n\n=begin\n :type token_id: String\n :type current_time: Integer\n :rtype: Void\n=end\n def renew(token_id, current_time)\n\n end\n\n\n=begin\n :type current_time: Integer\n :rtype: Integer\n=end\n def count_unexpired_tokens(current_time)\n\n end\n\n\nend\n\n# Your AuthenticationManager object will be instantiated and called as such:\n# obj = AuthenticationManager.new(time_to_live)\n# obj.generate(token_id, current_time)\n# obj.renew(token_id, current_time)\n# param_3 = obj.count_unexpired_tokens(current_time)",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Swift",
|
||
"langSlug": "swift",
|
||
"code": "\nclass AuthenticationManager {\n\n init(_ timeToLive: Int) {\n\n }\n \n func generate(_ tokenId: String, _ currentTime: Int) {\n\n }\n \n func renew(_ tokenId: String, _ currentTime: Int) {\n\n }\n \n func countUnexpiredTokens(_ currentTime: Int) -> Int {\n\n }\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * let obj = AuthenticationManager(timeToLive)\n * obj.generate(tokenId, currentTime)\n * obj.renew(tokenId, currentTime)\n * let ret_3: Int = obj.countUnexpiredTokens(currentTime)\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Go",
|
||
"langSlug": "golang",
|
||
"code": "type AuthenticationManager struct {\n\n}\n\n\nfunc Constructor(timeToLive int) AuthenticationManager {\n\n}\n\n\nfunc (this *AuthenticationManager) Generate(tokenId string, currentTime int) {\n\n}\n\n\nfunc (this *AuthenticationManager) Renew(tokenId string, currentTime int) {\n\n}\n\n\nfunc (this *AuthenticationManager) CountUnexpiredTokens(currentTime int) int {\n\n}\n\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * obj := Constructor(timeToLive);\n * obj.Generate(tokenId,currentTime);\n * obj.Renew(tokenId,currentTime);\n * param_3 := obj.CountUnexpiredTokens(currentTime);\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Scala",
|
||
"langSlug": "scala",
|
||
"code": "class AuthenticationManager(_timeToLive: Int) {\n\n def generate(tokenId: String, currentTime: Int) {\n \n }\n\n def renew(tokenId: String, currentTime: Int) {\n \n }\n\n def countUnexpiredTokens(currentTime: Int): Int = {\n \n }\n\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * var obj = new AuthenticationManager(timeToLive)\n * obj.generate(tokenId,currentTime)\n * obj.renew(tokenId,currentTime)\n * var param_3 = obj.countUnexpiredTokens(currentTime)\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Kotlin",
|
||
"langSlug": "kotlin",
|
||
"code": "class AuthenticationManager(timeToLive: Int) {\n\n fun generate(tokenId: String, currentTime: Int) {\n\n }\n\n fun renew(tokenId: String, currentTime: Int) {\n\n }\n\n fun countUnexpiredTokens(currentTime: Int): Int {\n\n }\n\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * var obj = AuthenticationManager(timeToLive)\n * obj.generate(tokenId,currentTime)\n * obj.renew(tokenId,currentTime)\n * var param_3 = obj.countUnexpiredTokens(currentTime)\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Rust",
|
||
"langSlug": "rust",
|
||
"code": "struct AuthenticationManager {\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 AuthenticationManager {\n\n fn new(timeToLive: i32) -> Self {\n\n }\n \n fn generate(&self, token_id: String, current_time: i32) {\n\n }\n \n fn renew(&self, token_id: String, current_time: i32) {\n\n }\n \n fn count_unexpired_tokens(&self, current_time: i32) -> i32 {\n\n }\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * let obj = AuthenticationManager::new(timeToLive);\n * obj.generate(tokenId, currentTime);\n * obj.renew(tokenId, currentTime);\n * let ret_3: i32 = obj.count_unexpired_tokens(currentTime);\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "PHP",
|
||
"langSlug": "php",
|
||
"code": "class AuthenticationManager {\n /**\n * @param Integer $timeToLive\n */\n function __construct($timeToLive) {\n\n }\n\n /**\n * @param String $tokenId\n * @param Integer $currentTime\n * @return NULL\n */\n function generate($tokenId, $currentTime) {\n\n }\n\n /**\n * @param String $tokenId\n * @param Integer $currentTime\n * @return NULL\n */\n function renew($tokenId, $currentTime) {\n\n }\n\n /**\n * @param Integer $currentTime\n * @return Integer\n */\n function countUnexpiredTokens($currentTime) {\n\n }\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * $obj = AuthenticationManager($timeToLive);\n * $obj->generate($tokenId, $currentTime);\n * $obj->renew($tokenId, $currentTime);\n * $ret_3 = $obj->countUnexpiredTokens($currentTime);\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "TypeScript",
|
||
"langSlug": "typescript",
|
||
"code": "class AuthenticationManager {\n constructor(timeToLive: number) {\n\n }\n\n generate(tokenId: string, currentTime: number): void {\n\n }\n\n renew(tokenId: string, currentTime: number): void {\n\n }\n\n countUnexpiredTokens(currentTime: number): number {\n\n }\n}\n\n/**\n * Your AuthenticationManager object will be instantiated and called as such:\n * var obj = new AuthenticationManager(timeToLive)\n * obj.generate(tokenId,currentTime)\n * obj.renew(tokenId,currentTime)\n * var param_3 = obj.countUnexpiredTokens(currentTime)\n */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Racket",
|
||
"langSlug": "racket",
|
||
"code": "(define authentication-manager%\n (class object%\n (super-new)\n\n ; time-to-live : exact-integer?\n (init-field\n time-to-live)\n \n ; generate : string? exact-integer? -> void?\n (define/public (generate tokenId currentTime)\n\n )\n ; renew : string? exact-integer? -> void?\n (define/public (renew tokenId currentTime)\n\n )\n ; count-unexpired-tokens : exact-integer? -> exact-integer?\n (define/public (count-unexpired-tokens currentTime)\n\n )))\n\n;; Your authentication-manager% object will be instantiated and called as such:\n;; (define obj (new authentication-manager% [timeToLive timeToLive]))\n;; (send obj generate token-id current-time)\n;; (send obj renew token-id current-time)\n;; (define param_3 (send obj count-unexpired-tokens current-time))",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Erlang",
|
||
"langSlug": "erlang",
|
||
"code": "-spec authentication_manager_init_(TimeToLive :: integer()) -> any().\nauthentication_manager_init_(TimeToLive) ->\n .\n\n-spec authentication_manager_generate(TokenId :: unicode:unicode_binary(), CurrentTime :: integer()) -> any().\nauthentication_manager_generate(TokenId, CurrentTime) ->\n .\n\n-spec authentication_manager_renew(TokenId :: unicode:unicode_binary(), CurrentTime :: integer()) -> any().\nauthentication_manager_renew(TokenId, CurrentTime) ->\n .\n\n-spec authentication_manager_count_unexpired_tokens(CurrentTime :: integer()) -> integer().\nauthentication_manager_count_unexpired_tokens(CurrentTime) ->\n .\n\n\n%% Your functions will be called as such:\n%% authentication_manager_init_(TimeToLive),\n%% authentication_manager_generate(TokenId, CurrentTime),\n%% authentication_manager_renew(TokenId, CurrentTime),\n%% Param_3 = authentication_manager_count_unexpired_tokens(CurrentTime),\n\n%% authentication_manager_init_ will be called before every test case, in which you can do some necessary initializations.",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Elixir",
|
||
"langSlug": "elixir",
|
||
"code": "defmodule AuthenticationManager do\n @spec init_(time_to_live :: integer) :: any\n def init_(time_to_live) do\n\n end\n\n @spec generate(token_id :: String.t, current_time :: integer) :: any\n def generate(token_id, current_time) do\n\n end\n\n @spec renew(token_id :: String.t, current_time :: integer) :: any\n def renew(token_id, current_time) do\n\n end\n\n @spec count_unexpired_tokens(current_time :: integer) :: integer\n def count_unexpired_tokens(current_time) do\n\n end\nend\n\n# Your functions will be called as such:\n# AuthenticationManager.init_(time_to_live)\n# AuthenticationManager.generate(token_id, current_time)\n# AuthenticationManager.renew(token_id, current_time)\n# param_3 = AuthenticationManager.count_unexpired_tokens(current_time)\n\n# AuthenticationManager.init_ will be called before every test case, in which you can do some necessary initializations.",
|
||
"__typename": "CodeSnippetNode"
|
||
}
|
||
],
|
||
"stats": "{\"totalAccepted\": \"7.3K\", \"totalSubmission\": \"12.8K\", \"totalAcceptedRaw\": 7339, \"totalSubmissionRaw\": 12797, \"acRate\": \"57.3%\"}",
|
||
"hints": [
|
||
"Using a map, track the expiry times of the tokens.",
|
||
"When generating a new token, add it to the map with its expiry time.",
|
||
"When renewing a token, check if it's on the map and has not expired yet. If so, update its expiry time.",
|
||
"To count unexpired tokens, iterate on the map and check for each token if it's not expired yet."
|
||
],
|
||
"solution": null,
|
||
"status": null,
|
||
"sampleTestCase": "[\"AuthenticationManager\",\"renew\",\"generate\",\"countUnexpiredTokens\",\"generate\",\"renew\",\"renew\",\"countUnexpiredTokens\"]\n[[5],[\"aaa\",1],[\"aaa\",2],[6],[\"bbb\",7],[\"aaa\",8],[\"bbb\",10],[15]]",
|
||
"metaData": "{\n \"classname\": \"AuthenticationManager\",\n \"constructor\": {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"timeToLive\"\n }\n ]\n },\n \"methods\": [\n {\n \"params\": [\n {\n \"type\": \"string\",\n \"name\": \"tokenId\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"currentTime\"\n }\n ],\n \"name\": \"generate\",\n \"return\": {\n \"type\": \"void\"\n }\n },\n {\n \"params\": [\n {\n \"type\": \"string\",\n \"name\": \"tokenId\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"currentTime\"\n }\n ],\n \"name\": \"renew\",\n \"return\": {\n \"type\": \"void\"\n }\n },\n {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"currentTime\"\n }\n ],\n \"name\": \"countUnexpiredTokens\",\n \"return\": {\n \"type\": \"integer\"\n }\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++ 17\\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\\u7528GNU99\\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>\\r\\n\\r\\n<p>\\u60a8\\u7684\\u4ee3\\u7801\\u5728\\u7f16\\u8bd1\\u65f6\\u9ed8\\u8ba4\\u5f00\\u542f\\u4e86debug\\u6807\\u8bb0(<code>\\/debug:pdbonly<\\/code>)\\u3002<\\/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\\\" target=\\\"_blank\\\"> datastructures-js\\/priority-queue<\\/a> \\u548c <a 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\"]}",
|
||
"book": null,
|
||
"isSubscribed": false,
|
||
"isDailyQuestion": false,
|
||
"dailyRecordStatus": null,
|
||
"editorType": "CKEDITOR",
|
||
"ugcQuestionId": null,
|
||
"style": "LEETCODE",
|
||
"exampleTestcases": "[\"AuthenticationManager\",\"renew\",\"generate\",\"countUnexpiredTokens\",\"generate\",\"renew\",\"renew\",\"countUnexpiredTokens\"]\n[[5],[\"aaa\",1],[\"aaa\",2],[6],[\"bbb\",7],[\"aaa\",8],[\"bbb\",10],[15]]",
|
||
"__typename": "QuestionNode"
|
||
}
|
||
}
|
||
} |