{ "data": { "question": { "questionId": "3678", "questionFrontendId": "3408", "categoryTitle": "Algorithms", "boundTopicId": 3037721, "title": "Design Task Manager", "titleSlug": "design-task-manager", "content": "

There is a task management system that allows users to manage their tasks, each associated with a priority. The system should efficiently handle adding, modifying, executing, and removing tasks.

\n\n

Implement the TaskManager class:

\n\n\n\n

Note that a user may be assigned multiple tasks.

\n\n

 

\n

Example 1:

\n\n
\n

Input:
\n["TaskManager", "add", "edit", "execTop", "rmv", "add", "execTop"]
\n[[[[1, 101, 10], [2, 102, 20], [3, 103, 15]]], [4, 104, 5], [102, 8], [], [101], [5, 105, 15], []]

\n\n

Output:
\n[null, null, null, 3, null, null, 5]

\n\n

Explanation

\nTaskManager taskManager = new TaskManager([[1, 101, 10], [2, 102, 20], [3, 103, 15]]); // Initializes with three tasks for Users 1, 2, and 3.
\ntaskManager.add(4, 104, 5); // Adds task 104 with priority 5 for User 4.
\ntaskManager.edit(102, 8); // Updates priority of task 102 to 8.
\ntaskManager.execTop(); // return 3. Executes task 103 for User 3.
\ntaskManager.rmv(101); // Removes task 101 from the system.
\ntaskManager.add(5, 105, 15); // Adds task 105 with priority 15 for User 5.
\ntaskManager.execTop(); // return 5. Executes task 105 for User 5.
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "设计任务管理器", "translatedContent": "

一个任务管理器系统可以让用户管理他们的任务，每个任务有一个优先级。这个系统需要高效地处理添加、修改、执行和删除任务的操作。

\n\n

请你设计一个 TaskManager 类：

\n\n\n\n

注意 ，一个用户可能被安排多个任务。

\n\n

 

\n\n

示例 1：

\n\n
\n

输入：
\n[\"TaskManager\", \"add\", \"edit\", \"execTop\", \"rmv\", \"add\", \"execTop\"]
\n[[[[1, 101, 10], [2, 102, 20], [3, 103, 15]]], [4, 104, 5], [102, 8], [], [101], [5, 105, 15], []]

\n\n

输出：
\n[null, null, null, 3, null, null, 5]

\n\n

解释：

\nTaskManager taskManager = new TaskManager([[1, 101, 10], [2, 102, 20], [3, 103, 15]]); // 分别给用户 1 ，2 和 3 初始化一个任务。
\ntaskManager.add(4, 104, 5); // 给用户 4 添加优先级为 5 的任务 104 。
\ntaskManager.edit(102, 8); // 更新任务 102 的优先级为 8 。
\ntaskManager.execTop(); // 返回 3 。执行用户 3 的任务 103 。
\ntaskManager.rmv(101); // 将系统中的任务 101 删除。
\ntaskManager.add(5, 105, 15); // 给用户 5 添加优先级为 15 的任务 105 。
\ntaskManager.execTop(); // 返回 5 。执行用户 5 的任务 105 。
\n\n

 

\n\n

提示：

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"translatedName": "有序集合", "__typename": "TopicTagNode" }, { "name": "Heap (Priority Queue)", "slug": "heap-priority-queue", "translatedName": "堆（优先队列）", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": [ { "lang": "C++", "langSlug": "cpp", "code": "class TaskManager {\npublic:\n TaskManager(vector>& tasks) {\n \n }\n \n void add(int userId, int taskId, int priority) {\n \n }\n \n void edit(int taskId, int newPriority) {\n \n }\n \n void rmv(int taskId) {\n \n }\n \n int execTop() {\n \n }\n};\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * TaskManager* obj = new TaskManager(tasks);\n * obj->add(userId,taskId,priority);\n * obj->edit(taskId,newPriority);\n * obj->rmv(taskId);\n * int param_4 = obj->execTop();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Java", "langSlug": "java", "code": "class TaskManager {\n\n public TaskManager(List> tasks) {\n \n }\n \n public void add(int userId, int taskId, int priority) {\n \n }\n \n public void edit(int taskId, int newPriority) {\n \n }\n \n public void rmv(int taskId) {\n \n }\n \n public int execTop() {\n \n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * TaskManager obj = new TaskManager(tasks);\n * obj.add(userId,taskId,priority);\n * obj.edit(taskId,newPriority);\n * obj.rmv(taskId);\n * int param_4 = obj.execTop();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "code": "class TaskManager(object):\n\n def __init__(self, tasks):\n \"\"\"\n :type tasks: List[List[int]]\n \"\"\"\n \n\n def add(self, userId, taskId, priority):\n \"\"\"\n :type userId: int\n :type taskId: int\n :type priority: int\n :rtype: None\n \"\"\"\n \n\n def edit(self, taskId, newPriority):\n \"\"\"\n :type taskId: int\n :type newPriority: int\n :rtype: None\n \"\"\"\n \n\n def rmv(self, taskId):\n \"\"\"\n :type taskId: int\n :rtype: None\n \"\"\"\n \n\n def execTop(self):\n \"\"\"\n :rtype: int\n \"\"\"\n \n\n\n# Your TaskManager object will be instantiated and called as such:\n# obj = TaskManager(tasks)\n# obj.add(userId,taskId,priority)\n# obj.edit(taskId,newPriority)\n# obj.rmv(taskId)\n# param_4 = obj.execTop()", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "code": "class TaskManager:\n\n def __init__(self, tasks: List[List[int]]):\n \n\n def add(self, userId: int, taskId: int, priority: int) -> None:\n \n\n def edit(self, taskId: int, newPriority: int) -> None:\n \n\n def rmv(self, taskId: int) -> None:\n \n\n def execTop(self) -> int:\n \n\n\n# Your TaskManager object will be instantiated and called as such:\n# obj = TaskManager(tasks)\n# obj.add(userId,taskId,priority)\n# obj.edit(taskId,newPriority)\n# obj.rmv(taskId)\n# param_4 = obj.execTop()", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "\n\n\ntypedef struct {\n \n} TaskManager;\n\n\nTaskManager* taskManagerCreate(int** tasks, int tasksSize, int* tasksColSize) {\n \n}\n\nvoid taskManagerAdd(TaskManager* obj, int userId, int taskId, int priority) {\n \n}\n\nvoid taskManagerEdit(TaskManager* obj, int taskId, int newPriority) {\n \n}\n\nvoid taskManagerRmv(TaskManager* obj, int taskId) {\n \n}\n\nint taskManagerExecTop(TaskManager* obj) {\n \n}\n\nvoid taskManagerFree(TaskManager* obj) {\n \n}\n\n/**\n * Your TaskManager struct will be instantiated and called as such:\n * TaskManager* obj = taskManagerCreate(tasks, tasksSize, tasksColSize);\n * taskManagerAdd(obj, userId, taskId, priority);\n \n * taskManagerEdit(obj, taskId, newPriority);\n \n * taskManagerRmv(obj, taskId);\n \n * int param_4 = taskManagerExecTop(obj);\n \n * taskManagerFree(obj);\n*/", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "code": "public class TaskManager {\n\n public TaskManager(IList> tasks) {\n \n }\n \n public void Add(int userId, int taskId, int priority) {\n \n }\n \n public void Edit(int taskId, int newPriority) {\n \n }\n \n public void Rmv(int taskId) {\n \n }\n \n public int ExecTop() {\n \n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * TaskManager obj = new TaskManager(tasks);\n * obj.Add(userId,taskId,priority);\n * obj.Edit(taskId,newPriority);\n * obj.Rmv(taskId);\n * int param_4 = obj.ExecTop();\n */", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "/**\n * @param {number[][]} tasks\n */\nvar TaskManager = function(tasks) {\n \n};\n\n/** \n * @param {number} userId \n * @param {number} taskId \n * @param {number} priority\n * @return {void}\n */\nTaskManager.prototype.add = function(userId, taskId, priority) {\n \n};\n\n/** \n * @param {number} taskId \n * @param {number} newPriority\n * @return {void}\n */\nTaskManager.prototype.edit = function(taskId, newPriority) {\n \n};\n\n/** \n * @param {number} taskId\n * @return {void}\n */\nTaskManager.prototype.rmv = function(taskId) {\n \n};\n\n/**\n * @return {number}\n */\nTaskManager.prototype.execTop = function() {\n \n};\n\n/** \n * Your TaskManager object will be instantiated and called as such:\n * var obj = new TaskManager(tasks)\n * obj.add(userId,taskId,priority)\n * obj.edit(taskId,newPriority)\n * obj.rmv(taskId)\n * var param_4 = obj.execTop()\n */", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "code": "class TaskManager {\n constructor(tasks: number[][]) {\n \n }\n\n add(userId: number, taskId: number, priority: number): void {\n \n }\n\n edit(taskId: number, newPriority: number): void {\n \n }\n\n rmv(taskId: number): void {\n \n }\n\n execTop(): number {\n \n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * var obj = new TaskManager(tasks)\n * obj.add(userId,taskId,priority)\n * obj.edit(taskId,newPriority)\n * obj.rmv(taskId)\n * var param_4 = obj.execTop()\n */", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "code": "class TaskManager {\n /**\n * @param Integer[][] $tasks\n */\n function __construct($tasks) {\n \n }\n \n /**\n * @param Integer $userId\n * @param Integer $taskId\n * @param Integer $priority\n * @return NULL\n */\n function add($userId, $taskId, $priority) {\n \n }\n \n /**\n * @param Integer $taskId\n * @param Integer $newPriority\n * @return NULL\n */\n function edit($taskId, $newPriority) {\n \n }\n \n /**\n * @param Integer $taskId\n * @return NULL\n */\n function rmv($taskId) {\n \n }\n \n /**\n * @return Integer\n */\n function execTop() {\n \n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * $obj = TaskManager($tasks);\n * $obj->add($userId, $taskId, $priority);\n * $obj->edit($taskId, $newPriority);\n * $obj->rmv($taskId);\n * $ret_4 = $obj->execTop();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "code": "\nclass TaskManager {\n\n init(_ tasks: [[Int]]) {\n \n }\n \n func add(_ userId: Int, _ taskId: Int, _ priority: Int) {\n \n }\n \n func edit(_ taskId: Int, _ newPriority: Int) {\n \n }\n \n func rmv(_ taskId: Int) {\n \n }\n \n func execTop() -> Int {\n \n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * let obj = TaskManager(tasks)\n * obj.add(userId, taskId, priority)\n * obj.edit(taskId, newPriority)\n * obj.rmv(taskId)\n * let ret_4: Int = obj.execTop()\n */", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class TaskManager(tasks: List>) {\n\n fun add(userId: Int, taskId: Int, priority: Int) {\n \n }\n\n fun edit(taskId: Int, newPriority: Int) {\n \n }\n\n fun rmv(taskId: Int) {\n \n }\n\n fun execTop(): Int {\n \n }\n\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * var obj = TaskManager(tasks)\n * obj.add(userId,taskId,priority)\n * obj.edit(taskId,newPriority)\n * obj.rmv(taskId)\n * var param_4 = obj.execTop()\n */", "__typename": "CodeSnippetNode" }, { "lang": "Dart", "langSlug": "dart", "code": "class TaskManager {\n\n TaskManager(List> tasks) {\n \n }\n \n void add(int userId, int taskId, int priority) {\n \n }\n \n void edit(int taskId, int newPriority) {\n \n }\n \n void rmv(int taskId) {\n \n }\n \n int execTop() {\n \n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * TaskManager obj = TaskManager(tasks);\n * obj.add(userId,taskId,priority);\n * obj.edit(taskId,newPriority);\n * obj.rmv(taskId);\n * int param4 = obj.execTop();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "type TaskManager struct {\n \n}\n\n\nfunc Constructor(tasks [][]int) TaskManager {\n \n}\n\n\nfunc (this *TaskManager) Add(userId int, taskId int, priority int) {\n \n}\n\n\nfunc (this *TaskManager) Edit(taskId int, newPriority int) {\n \n}\n\n\nfunc (this *TaskManager) Rmv(taskId int) {\n \n}\n\n\nfunc (this *TaskManager) ExecTop() int {\n \n}\n\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * obj := Constructor(tasks);\n * obj.Add(userId,taskId,priority);\n * obj.Edit(taskId,newPriority);\n * obj.Rmv(taskId);\n * param_4 := obj.ExecTop();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "code": "class TaskManager\n\n=begin\n :type tasks: Integer[][]\n=end\n def initialize(tasks)\n \n end\n\n\n=begin\n :type user_id: Integer\n :type task_id: Integer\n :type priority: Integer\n :rtype: Void\n=end\n def add(user_id, task_id, priority)\n \n end\n\n\n=begin\n :type task_id: Integer\n :type new_priority: Integer\n :rtype: Void\n=end\n def edit(task_id, new_priority)\n \n end\n\n\n=begin\n :type task_id: Integer\n :rtype: Void\n=end\n def rmv(task_id)\n \n end\n\n\n=begin\n :rtype: Integer\n=end\n def exec_top()\n \n end\n\n\nend\n\n# Your TaskManager object will be instantiated and called as such:\n# obj = TaskManager.new(tasks)\n# obj.add(user_id, task_id, priority)\n# obj.edit(task_id, new_priority)\n# obj.rmv(task_id)\n# param_4 = obj.exec_top()", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "code": "class TaskManager(_tasks: List[List[Int]]) {\n\n def add(userId: Int, taskId: Int, priority: Int): Unit = {\n \n }\n\n def edit(taskId: Int, newPriority: Int): Unit = {\n \n }\n\n def rmv(taskId: Int): Unit = {\n \n }\n\n def execTop(): Int = {\n \n }\n\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * val obj = new TaskManager(tasks)\n * obj.add(userId,taskId,priority)\n * obj.edit(taskId,newPriority)\n * obj.rmv(taskId)\n * val param_4 = obj.execTop()\n */", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "code": "struct TaskManager {\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 TaskManager {\n\n fn new(tasks: Vec>) -> Self {\n \n }\n \n fn add(&self, user_id: i32, task_id: i32, priority: i32) {\n \n }\n \n fn edit(&self, task_id: i32, new_priority: i32) {\n \n }\n \n fn rmv(&self, task_id: i32) {\n \n }\n \n fn exec_top(&self) -> i32 {\n \n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * let obj = TaskManager::new(tasks);\n * obj.add(userId, taskId, priority);\n * obj.edit(taskId, newPriority);\n * obj.rmv(taskId);\n * let ret_4: i32 = obj.exec_top();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "code": "(define task-manager%\n (class object%\n (super-new)\n \n ; tasks : (listof (listof exact-integer?))\n (init-field\n tasks)\n \n ; add : exact-integer? exact-integer? exact-integer? -> void?\n (define/public (add user-id task-id priority)\n )\n ; edit : exact-integer? exact-integer? -> void?\n (define/public (edit task-id new-priority)\n )\n ; rmv : exact-integer? -> void?\n (define/public (rmv task-id)\n )\n ; exec-top : -> exact-integer?\n (define/public (exec-top)\n )))\n\n;; Your task-manager% object will be instantiated and called as such:\n;; (define obj (new task-manager% [tasks tasks]))\n;; (send obj add user-id task-id priority)\n;; (send obj edit task-id new-priority)\n;; (send obj rmv task-id)\n;; (define param_4 (send obj exec-top))", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec task_manager_init_(Tasks :: [[integer()]]) -> any().\ntask_manager_init_(Tasks) ->\n .\n\n-spec task_manager_add(UserId :: integer(), TaskId :: integer(), Priority :: integer()) -> any().\ntask_manager_add(UserId, TaskId, Priority) ->\n .\n\n-spec task_manager_edit(TaskId :: integer(), NewPriority :: integer()) -> any().\ntask_manager_edit(TaskId, NewPriority) ->\n .\n\n-spec task_manager_rmv(TaskId :: integer()) -> any().\ntask_manager_rmv(TaskId) ->\n .\n\n-spec task_manager_exec_top() -> integer().\ntask_manager_exec_top() ->\n .\n\n\n%% Your functions will be called as such:\n%% task_manager_init_(Tasks),\n%% task_manager_add(UserId, TaskId, Priority),\n%% task_manager_edit(TaskId, NewPriority),\n%% task_manager_rmv(TaskId),\n%% Param_4 = task_manager_exec_top(),\n\n%% task_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 TaskManager do\n @spec init_(tasks :: [[integer]]) :: any\n def init_(tasks) do\n \n end\n\n @spec add(user_id :: integer, task_id :: integer, priority :: integer) :: any\n def add(user_id, task_id, priority) do\n \n end\n\n @spec edit(task_id :: integer, new_priority :: integer) :: any\n def edit(task_id, new_priority) do\n \n end\n\n @spec rmv(task_id :: integer) :: any\n def rmv(task_id) do\n \n end\n\n @spec exec_top() :: integer\n def exec_top() do\n \n end\nend\n\n# Your functions will be called as such:\n# TaskManager.init_(tasks)\n# TaskManager.add(user_id, task_id, priority)\n# TaskManager.edit(task_id, new_priority)\n# TaskManager.rmv(task_id)\n# param_4 = TaskManager.exec_top()\n\n# TaskManager.init_ will be called before every test case, in which you can do some necessary initializations.", "__typename": "CodeSnippetNode" }, { "lang": "Cangjie", "langSlug": "cangjie", "code": "class TaskManager {\n init(tasks: ArrayList>) {\n\n }\n \n func add(userId: Int64, taskId: Int64, priority: Int64): Unit {\n\n }\n \n func edit(taskId: Int64, newPriority: Int64): Unit {\n\n }\n \n func rmv(taskId: Int64): Unit {\n\n }\n \n func execTop(): Int64 {\n\n }\n}\n\n/**\n * Your TaskManager object will be instantiated and called as such:\n * let obj: TaskManager = TaskManager(tasks)\n * obj.add(userId,taskId,priority)\n * obj.edit(taskId,newPriority)\n * obj.rmv(taskId)\n * let param_4 = obj.execTop()\n */", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"1.1K\", \"totalSubmission\": \"3.4K\", \"totalAcceptedRaw\": 1123, \"totalSubmissionRaw\": 3372, \"acRate\": \"33.3%\"}", "hints": [], "solution": null, "status": null, "sampleTestCase": "[\"TaskManager\",\"add\",\"edit\",\"execTop\",\"rmv\",\"add\",\"execTop\"]\n[[[[1,101,10],[2,102,20],[3,103,15]]],[4,104,5],[102,8],[],[101],[5,105,15],[]]", "metaData": "{\n \"classname\": \"TaskManager\",\n \"constructor\": {\n \"params\": [\n {\n \"type\": \"list>\",\n \"name\": \"tasks\"\n }\n ]\n },\n \"methods\": [\n {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"userId\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"taskId\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"priority\"\n }\n ],\n \"name\": \"add\",\n \"return\": {\n \"type\": \"void\"\n }\n },\n {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"taskId\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"newPriority\"\n }\n ],\n \"name\": \"edit\",\n \"return\": {\n \"type\": \"void\"\n }\n },\n {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"taskId\"\n }\n ],\n \"name\": \"rmv\",\n \"return\": {\n \"type\": \"void\"\n }\n },\n {\n \"params\": [],\n \"name\": 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