Throne Inheritance
<p>A kingdom consists of a king, his children, his grandchildren, and so on. Every once in a while, someone in the family dies or a child is born.</p>

<p>The kingdom has a well-defined order of inheritance that consists of the king as the first member. Let&#39;s define the recursive function <code>Successor(x, curOrder)</code>, which given a person <code>x</code> and the inheritance order so far, returns who should be the next person after <code>x</code> in the order of inheritance.</p>

<pre>
Successor(x, curOrder):
    if x has no children or all of x&#39;s children are in curOrder:
        if x is the king return null
        else return Successor(x&#39;s parent, curOrder)
    else return x&#39;s oldest child who&#39;s not in curOrder
</pre>

<p>For example, assume we have a kingdom that consists of the king, his children Alice and Bob (Alice is older than Bob), and finally Alice&#39;s son Jack.</p>

<ol>
	<li>In the beginning, <code>curOrder</code> will be <code>[&quot;king&quot;]</code>.</li>
	<li>Calling <code>Successor(king, curOrder)</code> will return Alice, so we append to <code>curOrder</code> to get <code>[&quot;king&quot;, &quot;Alice&quot;]</code>.</li>
	<li>Calling <code>Successor(Alice, curOrder)</code> will return Jack, so we append to <code>curOrder</code> to get <code>[&quot;king&quot;, &quot;Alice&quot;, &quot;Jack&quot;]</code>.</li>
	<li>Calling <code>Successor(Jack, curOrder)</code> will return Bob, so we append to <code>curOrder</code> to get <code>[&quot;king&quot;, &quot;Alice&quot;, &quot;Jack&quot;, &quot;Bob&quot;]</code>.</li>
	<li>Calling <code>Successor(Bob, curOrder)</code> will return <code>null</code>. Thus the order of inheritance will be <code>[&quot;king&quot;, &quot;Alice&quot;, &quot;Jack&quot;, &quot;Bob&quot;]</code>.</li>
</ol>

<p>Using the above function, we can always obtain a unique order of inheritance.</p>

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

<ul>
	<li><code>ThroneInheritance(string kingName)</code> Initializes an object of the <code>ThroneInheritance</code> class. The name of the king is given as part of the constructor.</li>
	<li><code>void birth(string parentName, string childName)</code> Indicates that <code>parentName</code> gave birth to <code>childName</code>.</li>
	<li><code>void death(string name)</code> Indicates the death of <code>name</code>. The death of the person doesn&#39;t affect the <code>Successor</code> function nor the current inheritance order. You can treat it as just marking the person as dead.</li>
	<li><code>string[] getInheritanceOrder()</code> Returns a list representing the current order of inheritance <strong>excluding</strong> dead people.</li>
</ul>

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

<pre>
<strong>Input</strong>
[&quot;ThroneInheritance&quot;, &quot;birth&quot;, &quot;birth&quot;, &quot;birth&quot;, &quot;birth&quot;, &quot;birth&quot;, &quot;birth&quot;, &quot;getInheritanceOrder&quot;, &quot;death&quot;, &quot;getInheritanceOrder&quot;]
[[&quot;king&quot;], [&quot;king&quot;, &quot;andy&quot;], [&quot;king&quot;, &quot;bob&quot;], [&quot;king&quot;, &quot;catherine&quot;], [&quot;andy&quot;, &quot;matthew&quot;], [&quot;bob&quot;, &quot;alex&quot;], [&quot;bob&quot;, &quot;asha&quot;], [null], [&quot;bob&quot;], [null]]
<strong>Output</strong>
[null, null, null, null, null, null, null, [&quot;king&quot;, &quot;andy&quot;, &quot;matthew&quot;, &quot;bob&quot;, &quot;alex&quot;, &quot;asha&quot;, &quot;catherine&quot;], null, [&quot;king&quot;, &quot;andy&quot;, &quot;matthew&quot;, &quot;alex&quot;, &quot;asha&quot;, &quot;catherine&quot;]]

<strong>Explanation</strong>
ThroneInheritance t= new ThroneInheritance(&quot;king&quot;); // order: <strong>king</strong>
t.birth(&quot;king&quot;, &quot;andy&quot;); // order: king &gt; <strong>andy</strong>
t.birth(&quot;king&quot;, &quot;bob&quot;); // order: king &gt; andy &gt; <strong>bob</strong>
t.birth(&quot;king&quot;, &quot;catherine&quot;); // order: king &gt; andy &gt; bob &gt; <strong>catherine</strong>
t.birth(&quot;andy&quot;, &quot;matthew&quot;); // order: king &gt; andy &gt; <strong>matthew</strong> &gt; bob &gt; catherine
t.birth(&quot;bob&quot;, &quot;alex&quot;); // order: king &gt; andy &gt; matthew &gt; bob &gt; <strong>alex</strong> &gt; catherine
t.birth(&quot;bob&quot;, &quot;asha&quot;); // order: king &gt; andy &gt; matthew &gt; bob &gt; alex &gt; <strong>asha</strong> &gt; catherine
t.getInheritanceOrder(); // return [&quot;king&quot;, &quot;andy&quot;, &quot;matthew&quot;, &quot;bob&quot;, &quot;alex&quot;, &quot;asha&quot;, &quot;catherine&quot;]
t.death(&quot;bob&quot;); // order: king &gt; andy &gt; matthew &gt; <strong><s>bob</s></strong> &gt; alex &gt; asha &gt; catherine
t.getInheritanceOrder(); // return [&quot;king&quot;, &quot;andy&quot;, &quot;matthew&quot;, &quot;alex&quot;, &quot;asha&quot;, &quot;catherine&quot;]
</pre>

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

<ul>
	<li><code>1 &lt;= kingName.length, parentName.length, childName.length, name.length &lt;= 15</code></li>
	<li><code>kingName</code>, <code>parentName</code>, <code>childName</code>, and <code>name</code> consist of lowercase English letters only.</li>
	<li>All arguments <code>childName</code> and <code>kingName</code> are <strong>distinct</strong>.</li>
	<li>All <code>name</code> arguments of <code>death</code> will be passed to either the constructor or as <code>childName</code> to <code>birth</code> first.</li>
	<li>For each call to&nbsp;<code>birth(parentName, childName)</code>, it is guaranteed that&nbsp;<code>parentName</code> is alive.</li>
	<li>At most <code>10<sup>5</sup></code> calls will be made to <code>birth</code> and <code>death</code>.</li>
	<li>At most <code>10</code> calls will be made to <code>getInheritanceOrder</code>.</li>
</ul>

['operations-on-tree']
[]
[{"value": "cpp", "text": "C++", "defaultCode": "class ThroneInheritance {\npublic:\n    ThroneInheritance(string kingName) {\n        \n    }\n    \n    void birth(string parentName, string childName) {\n        \n    }\n    \n    void death(string name) {\n        \n    }\n    \n    vector<string> getInheritanceOrder() {\n        \n    }\n};\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * ThroneInheritance* obj = new ThroneInheritance(kingName);\n * obj->birth(parentName,childName);\n * obj->death(name);\n * vector<string> param_3 = obj->getInheritanceOrder();\n */"}, {"value": "java", "text": "Java", "defaultCode": "class ThroneInheritance {\n\n    public ThroneInheritance(String kingName) {\n        \n    }\n    \n    public void birth(String parentName, String childName) {\n        \n    }\n    \n    public void death(String name) {\n        \n    }\n    \n    public List<String> getInheritanceOrder() {\n        \n    }\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * ThroneInheritance obj = new ThroneInheritance(kingName);\n * obj.birth(parentName,childName);\n * obj.death(name);\n * List<String> param_3 = obj.getInheritanceOrder();\n */"}, {"value": "python", "text": "Python", "defaultCode": "class ThroneInheritance(object):\n\n    def __init__(self, kingName):\n        \"\"\"\n        :type kingName: str\n        \"\"\"\n        \n\n    def birth(self, parentName, childName):\n        \"\"\"\n        :type parentName: str\n        :type childName: str\n        :rtype: None\n        \"\"\"\n        \n\n    def death(self, name):\n        \"\"\"\n        :type name: str\n        :rtype: None\n        \"\"\"\n        \n\n    def getInheritanceOrder(self):\n        \"\"\"\n        :rtype: List[str]\n        \"\"\"\n        \n\n\n# Your ThroneInheritance object will be instantiated and called as such:\n# obj = ThroneInheritance(kingName)\n# obj.birth(parentName,childName)\n# obj.death(name)\n# param_3 = obj.getInheritanceOrder()"}, {"value": "python3", "text": "Python3", "defaultCode": "class ThroneInheritance:\n\n    def __init__(self, kingName: str):\n        \n\n    def birth(self, parentName: str, childName: str) -> None:\n        \n\n    def death(self, name: str) -> None:\n        \n\n    def getInheritanceOrder(self) -> List[str]:\n        \n\n\n# Your ThroneInheritance object will be instantiated and called as such:\n# obj = ThroneInheritance(kingName)\n# obj.birth(parentName,childName)\n# obj.death(name)\n# param_3 = obj.getInheritanceOrder()"}, {"value": "c", "text": "C", "defaultCode": "\n\n\ntypedef struct {\n    \n} ThroneInheritance;\n\n\nThroneInheritance* throneInheritanceCreate(char* kingName) {\n    \n}\n\nvoid throneInheritanceBirth(ThroneInheritance* obj, char* parentName, char* childName) {\n    \n}\n\nvoid throneInheritanceDeath(ThroneInheritance* obj, char* name) {\n    \n}\n\nchar** throneInheritanceGetInheritanceOrder(ThroneInheritance* obj, int* retSize) {\n    \n}\n\nvoid throneInheritanceFree(ThroneInheritance* obj) {\n    \n}\n\n/**\n * Your ThroneInheritance struct will be instantiated and called as such:\n * ThroneInheritance* obj = throneInheritanceCreate(kingName);\n * throneInheritanceBirth(obj, parentName, childName);\n \n * throneInheritanceDeath(obj, name);\n \n * char** param_3 = throneInheritanceGetInheritanceOrder(obj, retSize);\n \n * throneInheritanceFree(obj);\n*/"}, {"value": "csharp", "text": "C#", "defaultCode": "public class ThroneInheritance {\n\n    public ThroneInheritance(string kingName) {\n        \n    }\n    \n    public void Birth(string parentName, string childName) {\n        \n    }\n    \n    public void Death(string name) {\n        \n    }\n    \n    public IList<string> GetInheritanceOrder() {\n        \n    }\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * ThroneInheritance obj = new ThroneInheritance(kingName);\n * obj.Birth(parentName,childName);\n * obj.Death(name);\n * IList<string> param_3 = obj.GetInheritanceOrder();\n */"}, {"value": "javascript", "text": "JavaScript", "defaultCode": "/**\n * @param {string} kingName\n */\nvar ThroneInheritance = function(kingName) {\n    \n};\n\n/** \n * @param {string} parentName \n * @param {string} childName\n * @return {void}\n */\nThroneInheritance.prototype.birth = function(parentName, childName) {\n    \n};\n\n/** \n * @param {string} name\n * @return {void}\n */\nThroneInheritance.prototype.death = function(name) {\n    \n};\n\n/**\n * @return {string[]}\n */\nThroneInheritance.prototype.getInheritanceOrder = function() {\n    \n};\n\n/** \n * Your ThroneInheritance object will be instantiated and called as such:\n * var obj = new ThroneInheritance(kingName)\n * obj.birth(parentName,childName)\n * obj.death(name)\n * var param_3 = obj.getInheritanceOrder()\n */"}, {"value": "typescript", "text": "TypeScript", "defaultCode": "class ThroneInheritance {\n    constructor(kingName: string) {\n        \n    }\n\n    birth(parentName: string, childName: string): void {\n        \n    }\n\n    death(name: string): void {\n        \n    }\n\n    getInheritanceOrder(): string[] {\n        \n    }\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * var obj = new ThroneInheritance(kingName)\n * obj.birth(parentName,childName)\n * obj.death(name)\n * var param_3 = obj.getInheritanceOrder()\n */"}, {"value": "php", "text": "PHP", "defaultCode": "class ThroneInheritance {\n    /**\n     * @param String $kingName\n     */\n    function __construct($kingName) {\n        \n    }\n  \n    /**\n     * @param String $parentName\n     * @param String $childName\n     * @return NULL\n     */\n    function birth($parentName, $childName) {\n        \n    }\n  \n    /**\n     * @param String $name\n     * @return NULL\n     */\n    function death($name) {\n        \n    }\n  \n    /**\n     * @return String[]\n     */\n    function getInheritanceOrder() {\n        \n    }\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * $obj = ThroneInheritance($kingName);\n * $obj->birth($parentName, $childName);\n * $obj->death($name);\n * $ret_3 = $obj->getInheritanceOrder();\n */"}, {"value": "swift", "text": "Swift", "defaultCode": "\nclass ThroneInheritance {\n\n    init(_ kingName: String) {\n        \n    }\n    \n    func birth(_ parentName: String, _ childName: String) {\n        \n    }\n    \n    func death(_ name: String) {\n        \n    }\n    \n    func getInheritanceOrder() -> [String] {\n        \n    }\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * let obj = ThroneInheritance(kingName)\n * obj.birth(parentName, childName)\n * obj.death(name)\n * let ret_3: [String] = obj.getInheritanceOrder()\n */"}, {"value": "kotlin", "text": "Kotlin", "defaultCode": "class ThroneInheritance(kingName: String) {\n\n    fun birth(parentName: String, childName: String) {\n        \n    }\n\n    fun death(name: String) {\n        \n    }\n\n    fun getInheritanceOrder(): List<String> {\n        \n    }\n\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * var obj = ThroneInheritance(kingName)\n * obj.birth(parentName,childName)\n * obj.death(name)\n * var param_3 = obj.getInheritanceOrder()\n */"}, {"value": "dart", "text": "Dart", "defaultCode": "class ThroneInheritance {\n\n  ThroneInheritance(String kingName) {\n    \n  }\n  \n  void birth(String parentName, String childName) {\n    \n  }\n  \n  void death(String name) {\n    \n  }\n  \n  List<String> getInheritanceOrder() {\n    \n  }\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * ThroneInheritance obj = ThroneInheritance(kingName);\n * obj.birth(parentName,childName);\n * obj.death(name);\n * List<String> param3 = obj.getInheritanceOrder();\n */"}, {"value": "golang", "text": "Go", "defaultCode": "type ThroneInheritance struct {\n    \n}\n\n\nfunc Constructor(kingName string) ThroneInheritance {\n    \n}\n\n\nfunc (this *ThroneInheritance) Birth(parentName string, childName string)  {\n    \n}\n\n\nfunc (this *ThroneInheritance) Death(name string)  {\n    \n}\n\n\nfunc (this *ThroneInheritance) GetInheritanceOrder() []string {\n    \n}\n\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * obj := Constructor(kingName);\n * obj.Birth(parentName,childName);\n * obj.Death(name);\n * param_3 := obj.GetInheritanceOrder();\n */"}, {"value": "ruby", "text": "Ruby", "defaultCode": "class ThroneInheritance\n\n=begin\n    :type king_name: String\n=end\n    def initialize(king_name)\n        \n    end\n\n\n=begin\n    :type parent_name: String\n    :type child_name: String\n    :rtype: Void\n=end\n    def birth(parent_name, child_name)\n        \n    end\n\n\n=begin\n    :type name: String\n    :rtype: Void\n=end\n    def death(name)\n        \n    end\n\n\n=begin\n    :rtype: String[]\n=end\n    def get_inheritance_order()\n        \n    end\n\n\nend\n\n# Your ThroneInheritance object will be instantiated and called as such:\n# obj = ThroneInheritance.new(king_name)\n# obj.birth(parent_name, child_name)\n# obj.death(name)\n# param_3 = obj.get_inheritance_order()"}, {"value": "scala", "text": "Scala", "defaultCode": "class ThroneInheritance(_kingName: String) {\n\n    def birth(parentName: String, childName: String): Unit = {\n        \n    }\n\n    def death(name: String): Unit = {\n        \n    }\n\n    def getInheritanceOrder(): List[String] = {\n        \n    }\n\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * val obj = new ThroneInheritance(kingName)\n * obj.birth(parentName,childName)\n * obj.death(name)\n * val param_3 = obj.getInheritanceOrder()\n */"}, {"value": "rust", "text": "Rust", "defaultCode": "struct ThroneInheritance {\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 ThroneInheritance {\n\n    fn new(kingName: String) -> Self {\n        \n    }\n    \n    fn birth(&self, parent_name: String, child_name: String) {\n        \n    }\n    \n    fn death(&self, name: String) {\n        \n    }\n    \n    fn get_inheritance_order(&self) -> Vec<String> {\n        \n    }\n}\n\n/**\n * Your ThroneInheritance object will be instantiated and called as such:\n * let obj = ThroneInheritance::new(kingName);\n * obj.birth(parentName, childName);\n * obj.death(name);\n * let ret_3: Vec<String> = obj.get_inheritance_order();\n */"}, {"value": "racket", "text": "Racket", "defaultCode": "(define throne-inheritance%\n  (class object%\n    (super-new)\n    \n    ; king-name : string?\n    (init-field\n      king-name)\n    \n    ; birth : string? string? -> void?\n    (define/public (birth parent-name child-name)\n      )\n    ; death : string? -> void?\n    (define/public (death name)\n      )\n    ; get-inheritance-order : -> (listof string?)\n    (define/public (get-inheritance-order)\n      )))\n\n;; Your throne-inheritance% object will be instantiated and called as such:\n;; (define obj (new throne-inheritance% [king-name king-name]))\n;; (send obj birth parent-name child-name)\n;; (send obj death name)\n;; (define param_3 (send obj get-inheritance-order))"}, {"value": "erlang", "text": "Erlang", "defaultCode": "-spec throne_inheritance_init_(KingName :: unicode:unicode_binary()) -> any().\nthrone_inheritance_init_(KingName) ->\n  .\n\n-spec throne_inheritance_birth(ParentName :: unicode:unicode_binary(), ChildName :: unicode:unicode_binary()) -> any().\nthrone_inheritance_birth(ParentName, ChildName) ->\n  .\n\n-spec throne_inheritance_death(Name :: unicode:unicode_binary()) -> any().\nthrone_inheritance_death(Name) ->\n  .\n\n-spec throne_inheritance_get_inheritance_order() -> [unicode:unicode_binary()].\nthrone_inheritance_get_inheritance_order() ->\n  .\n\n\n%% Your functions will be called as such:\n%% throne_inheritance_init_(KingName),\n%% throne_inheritance_birth(ParentName, ChildName),\n%% throne_inheritance_death(Name),\n%% Param_3 = throne_inheritance_get_inheritance_order(),\n\n%% throne_inheritance_init_ will be called before every test case, in which you can do some necessary initializations."}, {"value": "elixir", "text": "Elixir", "defaultCode": "defmodule ThroneInheritance do\n  @spec init_(king_name :: String.t) :: any\n  def init_(king_name) do\n    \n  end\n\n  @spec birth(parent_name :: String.t, child_name :: String.t) :: any\n  def birth(parent_name, child_name) do\n    \n  end\n\n  @spec death(name :: String.t) :: any\n  def death(name) do\n    \n  end\n\n  @spec get_inheritance_order() :: [String.t]\n  def get_inheritance_order() do\n    \n  end\nend\n\n# Your functions will be called as such:\n# ThroneInheritance.init_(king_name)\n# ThroneInheritance.birth(parent_name, child_name)\n# ThroneInheritance.death(name)\n# param_3 = ThroneInheritance.get_inheritance_order()\n\n# ThroneInheritance.init_ will be called before every test case, in which you can do some necessary initializations."}]
{
  "classname": "ThroneInheritance",
  "constructor": {
    "params": [
      {
        "type": "string",
        "name": "kingName"
      }
    ]
  },
  "methods": [
    {
      "params": [
        {
          "type": "string",
          "name": "parentName"
        },
        {
          "type": "string",
          "name": "childName"
        }
      ],
      "name": "birth",
      "return": {
        "type": "void"
      }
    },
    {
      "params": [
        {
          "type": "string",
          "name": "name"
        }
      ],
      "name": "death",
      "return": {
        "type": "void"
      }
    },
    {
      "params": [],
      "return": {
        "type": "list<string>"
      },
      "name": "getInheritanceOrder"
    }
  ],
  "return": {
    "type": "boolean"
  },
  "systemdesign": true
}
{"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', 'Tree', 'Depth-First Search', 'Design']