Design Task Manager
<p>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.</p>

<p>Implement the <code>TaskManager</code> class:</p>

<ul>
	<li>
	<p><code>TaskManager(vector&lt;vector&lt;int&gt;&gt;&amp; tasks)</code> initializes the task manager with a list of user-task-priority triples. Each element in the input list is of the form <code>[userId, taskId, priority]</code>, which adds a task to the specified user with the given priority.</p>
	</li>
	<li>
	<p><code>void add(int userId, int taskId, int priority)</code> adds a task with the specified <code>taskId</code> and <code>priority</code> to the user with <code>userId</code>. It is <strong>guaranteed</strong> that <code>taskId</code> does not <em>exist</em> in the system.</p>
	</li>
	<li>
	<p><code>void edit(int taskId, int newPriority)</code> updates the priority of the existing <code>taskId</code> to <code>newPriority</code>. It is <strong>guaranteed</strong> that <code>taskId</code> <em>exists</em> in the system.</p>
	</li>
	<li>
	<p><code>void rmv(int taskId)</code> removes the task identified by <code>taskId</code> from the system. It is <strong>guaranteed</strong> that <code>taskId</code> <em>exists</em> in the system.</p>
	</li>
	<li>
	<p><code>int execTop()</code> executes the task with the <strong>highest</strong> priority across all users. If there are multiple tasks with the same <strong>highest</strong> priority, execute the one with the highest <code>taskId</code>. After executing, the<strong> </strong><code>taskId</code><strong> </strong>is <strong>removed</strong> from the system. Return the <code>userId</code> associated with the executed task. If no tasks are available, return -1.</p>
	</li>
</ul>

<p><strong>Note</strong> that a user may be assigned multiple tasks.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<div class="example-block">
<p><strong>Input:</strong><br />
<span class="example-io">[&quot;TaskManager&quot;, &quot;add&quot;, &quot;edit&quot;, &quot;execTop&quot;, &quot;rmv&quot;, &quot;add&quot;, &quot;execTop&quot;]<br />
[[[[1, 101, 10], [2, 102, 20], [3, 103, 15]]], [4, 104, 5], [102, 8], [], [101], [5, 105, 15], []]</span></p>

<p><strong>Output:</strong><br />
<span class="example-io">[null, null, null, 3, null, null, 5] </span></p>

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

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>1 &lt;= tasks.length &lt;= 10<sup>5</sup></code></li>
	<li><code>0 &lt;= userId &lt;= 10<sup>5</sup></code></li>
	<li><code>0 &lt;= taskId &lt;= 10<sup>5</sup></code></li>
	<li><code>0 &lt;= priority &lt;= 10<sup>9</sup></code></li>
	<li><code>0 &lt;= newPriority &lt;= 10<sup>9</sup></code></li>
	<li>At most <code>2 * 10<sup>5</sup></code> calls will be made in <strong>total</strong> to <code>add</code>, <code>edit</code>, <code>rmv</code>, and <code>execTop</code> methods.</li>
	<li>The input is generated such that <code>taskId</code> will be valid.</li>
</ul>

[]
[]
[{"value": "cpp", "text": "C++", "defaultCode": "class TaskManager {\npublic:\n    TaskManager(vector<vector<int>>& 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 */"}, {"value": "java", "text": "Java", "defaultCode": "class TaskManager {\n\n    public TaskManager(List<List<Integer>> 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 */"}, {"value": "python", "text": "Python", "defaultCode": "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()"}, {"value": "python3", "text": "Python3", "defaultCode": "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()"}, {"value": "c", "text": "C", "defaultCode": "\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*/"}, {"value": "csharp", "text": "C#", "defaultCode": "public class TaskManager {\n\n    public TaskManager(IList<IList<int>> 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 */"}, {"value": "javascript", "text": "JavaScript", "defaultCode": "/**\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 */"}, {"value": "typescript", "text": "TypeScript", "defaultCode": "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 */"}, {"value": "php", "text": "PHP", "defaultCode": "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 */"}, {"value": "swift", "text": "Swift", "defaultCode": "\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 */"}, {"value": "kotlin", "text": "Kotlin", "defaultCode": "class TaskManager(tasks: List<List<Int>>) {\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 */"}, {"value": "dart", "text": "Dart", "defaultCode": "class TaskManager {\n\n  TaskManager(List<List<int>> 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 */"}, {"value": "golang", "text": "Go", "defaultCode": "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 */"}, {"value": "ruby", "text": "Ruby", "defaultCode": "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()"}, {"value": "scala", "text": "Scala", "defaultCode": "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 */"}, {"value": "rust", "text": "Rust", "defaultCode": "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<Vec<i32>>) -> 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 */"}, {"value": "racket", "text": "Racket", "defaultCode": "(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))"}, {"value": "erlang", "text": "Erlang", "defaultCode": "-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."}, {"value": "elixir", "text": "Elixir", "defaultCode": "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."}]
{
  "classname": "TaskManager",
  "constructor": {
    "params": [
      {
        "type": "list<list<integer>>",
        "name": "tasks"
      }
    ]
  },
  "methods": [
    {
      "params": [
        {
          "type": "integer",
          "name": "userId"
        },
        {
          "type": "integer",
          "name": "taskId"
        },
        {
          "type": "integer",
          "name": "priority"
        }
      ],
      "name": "add",
      "return": {
        "type": "void"
      }
    },
    {
      "params": [
        {
          "type": "integer",
          "name": "taskId"
        },
        {
          "type": "integer",
          "name": "newPriority"
        }
      ],
      "name": "edit",
      "return": {
        "type": "void"
      }
    },
    {
      "params": [
        {
          "type": "integer",
          "name": "taskId"
        }
      ],
      "name": "rmv",
      "return": {
        "type": "void"
      }
    },
    {
      "params": [],
      "name": "execTop",
      "return": {
        "type": "integer"
      }
    }
  ],
  "return": {
    "type": "boolean"
  },
  "systemdesign": true,
  "manual": false
}
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</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 21</code>. Using compile arguments: <code>--enable-preview --release 21</code></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 2.7.18</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\">is not maintained anymore</a>. For the latest Python, please choose Python3 instead.</p>"], "c": ["C", "<p>Compiled with <code>gcc 14</code> using the gnu11 standard.</p>\r\n\r\n<p>Your code is compiled with level one 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>\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-13\" target=\"_blank\">C# 13</a> with .NET 9 runtime</p>"], "javascript": ["JavaScript", "<p><code>Node.js 22.14.0</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 6.3.2 version of <a href=\"https://github.com/datastructures-js/priority-queue/tree/v6.3.2\" target=\"_blank\">datastructures-js/priority-queue</a> and 4.2.3 version of <a href=\"https://github.com/datastructures-js/queue/tree/v4.2.3\" target=\"_blank\">datastructures-js/queue</a> and 1.0.4 version of <a href=\"https://github.com/datastructures-js/deque/tree/v1.0.4\" target=\"_blank\">datastructures-js/deque</a>.</p>"], "ruby": ["Ruby", "<p><code>Ruby 3.2</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 6.0</code>.</p>\r\n\r\n<p>You may use the following packages:<br/>\r\n<a href=\"https://github.com/apple/swift-algorithms/tree/1.2.0\" target=\"_blank\">swift-algorithms 1.2.0</a><br/>\r\n<a href=\"https://github.com/apple/swift-collections/tree/1.1.4\" target=\"_blank\">swift-collections 1.1.4</a><br/>\r\n<a href=\"https://github.com/apple/swift-numerics/tree/1.0.2\" target=\"_blank\">swift-numerics 1.0.2</a></p>"], "golang": ["Go", "<p><code>Go 1.23</code></p>\r\n<p>Support <a href=\"https://pkg.go.dev/github.com/emirpasic/gods@v1.18.1\" target=\"_blank\">https://pkg.go.dev/github.com/emirpasic/gods@v1.18.1</a> and <a href=\"https://pkg.go.dev/github.com/emirpasic/gods/v2@v2.0.0-alpha\" target=\"_blank\">https://pkg.go.dev/github.com/emirpasic/gods/v2@v2.0.0-alpha</a> library.</p>"], "python3": ["Python3", "<p><code>Python 3.11</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 3.3.1</code>.</p>"], "kotlin": ["Kotlin", "<p><code>Kotlin 2.1.10</code>.</p>"], "rust": ["Rust", "<p><code>Rust 1.85.0</code>. Your code will be compiled with <code>opt-level</code> 2.</p>\r\n\r\n<p>Supports <a href=\"https://crates.io/crates/rand\" target=\"_blank\">rand v0.8</a> and <a href=\"https://crates.io/crates/regex\" target=\"_blank\">regex\u00a0v1</a> and <a href=\"https://crates.io/crates/itertools\" target=\"_blank\">itertools\u00a0v0.14</a> from crates.io</p>"], "php": ["PHP", "<p><code>PHP 8.2</code>.</p>\r\n<p>With bcmath module</p>"], "typescript": ["Typescript", "<p><code>TypeScript 5.7.3, Node.js 22.14.0</code>.</p>\r\n\r\n<p>Compile Options: <code>--alwaysStrict --strictBindCallApply --strictFunctionTypes --target ES2024</code></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 6.3.2 version of <a href=\"https://github.com/datastructures-js/priority-queue/tree/v6.3.2\" target=\"_blank\">datastructures-js/priority-queue</a> and 4.2.3 version of <a href=\"https://github.com/datastructures-js/queue/tree/v4.2.3\" target=\"_blank\">datastructures-js/queue</a> and 1.0.4 version of <a href=\"https://github.com/datastructures-js/deque/tree/v1.0.4\" target=\"_blank\">datastructures-js/deque</a>.</p>"], "racket": ["Racket", "<p><a href=\"https://docs.racket-lang.org/guide/performance.html#%28tech._c%29\" target=\"_blank\">Racket CS</a> v8.15</p>\r\n\r\n<p>Using <code>#lang racket</code></p>\r\n\r\n<p>Required <code>data/gvector data/queue data/order data/heap</code> automatically for your convenience</p>"], "erlang": ["Erlang", "Erlang/OTP 26"], "elixir": ["Elixir", "Elixir 1.17 with Erlang/OTP 26"], "dart": ["Dart", "<p>Dart 3.2. You may use package <a href=\"https://pub.dev/packages/collection/versions/1.18.0\" target=\"_blank\">collection</a></p>\r\n\r\n<p>Your code will be run directly without compiling</p>"]}
['Hash Table', 'Design', 'Heap (Priority Queue)', 'Ordered Set']