"content":"<p>Akingdomconsistsofaking,hischildren,hisgrandchildren,andsoon.Everyonceinawhile,someoneinthefamilydiesorachildisborn.</p>\n\n<p>Thekingdomhasawell-definedorderofinheritancethatconsistsofthekingasthefirstmember.Let'sdefinetherecursivefunction<code>Successor(x,curOrder)</code>,whichgivenaperson<code>x</code>andtheinheritanceordersofar,returnswhoshouldbethenextpersonafter<code>x</code>intheorderofinheritance.</p>\n\n<pre>\nSuccessor(x,curOrder):\nifxhasnochildrenorallofx'schildrenareincurOrder:\nifxisthekingreturnnull\nelsereturnSuccessor(x'sparent,curOrder)\nelsereturnx'soldestchildwho'snotincurOrder\n</pre>\n\n<p>Forexample,assumewehaveakingdomthatconsistsoftheking,hischildrenAliceandBob(AliceisolderthanBob),andfinallyAlice'ssonJack.</p>\n\n<ol>\n\t<li>Inthebeginning,<code>curOrder</code>willbe<code>["king"]</code>.</li>\n\t<li>Calling<code>Successor(king,curOrder)</code>willreturnAlice,soweappendto<code>curOrder</code>toget<code>["king","Alice"]</code>.</li>\n\t<li>Calling<code>Successor(Alice,curOrder)</code>willreturnJack,soweappendto<code>curOrder</code>toget<code>["king","Alice","Jack"]</code>.</li>\n\t<li>Calling<code>Successor(Jack,curOrder)</code>willreturnBob,soweappendto<code>curOrder</code>toget<code>["king","Alice","Jack","Bob"]</code>.</li>\n\t<li>Calling<code>Successor(Bob,curOrder)</code>willreturn<code>null</code>.Thustheorderofinheritancewillbe<code>["king","Alice","Jack","Bob"]</code>.</li>\n</ol>\n\n<p>Usingtheabovefunction,wecanalwaysobtainauniqueorderofinheritance.</p>\n\n<p>Implementthe<code>ThroneInheritance</code>class:</p>\n\n<ul>\n\t<li><code>ThroneInheritance(stringkingName)</code>Initializesanobjectofthe<code>ThroneInheritance</code>class.Thenameofthekingisgivenaspartoftheconstructor.</li>\n\t<li><code>voidbirth(stringparentName,stringchildName)</code>Indicatesthat<code>parentName</code>gavebirthto<code>childName</code>.</li>\n\t<li><code>voiddeath(stringname)</code>Indicatesthedeathof<code>name</code>.Thedeathofthepersondoesn'taffectthe<code>Successor</code>functionnorthecurrentinheritanceorder.Youcantreatitasjustmarkingthepersonasdead.</li>\n\t<li><code>string[]getInheritanceOrder()</code>Returnsalistrepresentingthecurrentorderofinheritance<strong>excluding</strong>deadpeople.</li>\n</ul>\n\n<p> </p>\n<p><strong>Example1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n["ThroneInheritance","birth","birth","birth","birth","birth","birth","getInheritanceOrder","death","getInheritanceOrder"]\n[["king"],["king","andy"],["king","bob"],["king","catherine"],["andy","matthew"],["bob","alex"],["bob","asha"],[null],["bob"],[null]]\n<strong>Output</strong>\n[null,null,null,null,null,null,null,["king","andy","matthew","bob","alex","asha","catherine"],null,["king","andy","matthew","alex","asha","catherine"]]\n\n<strong>Explanation</strong>\nThroneInheritancet=newThroneInheritance("king");// order: <strong>king</strong>\nt.birth("king", "andy"); // order: king > <strong>andy</strong>\nt.birth("king", "bob"); // order: king > andy > <strong>bob</strong>\nt.birth("king", "catherine"); // order: king > andy > b
"code":"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 */",
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{
"lang":"JavaScript",
"langSlug":"javascript",
"code":"/**\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 */",
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{
"lang":"Ruby",
"langSlug":"ruby",
"code":"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()",
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{
"lang":"Swift",
"langSlug":"swift",
"code":"\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 */",
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{
"lang":"Go",
"langSlug":"golang",
"code":"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 */",
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{
"lang":"Scala",
"langSlug":"scala",
"code":"class ThroneInheritance(_kingName: String) {\n\n def birth(parentName: String, childName: String) {\n \n }\n\n def death(name: String) {\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 * var obj = new ThroneInheritance(kingName)\n * obj.birth(parentName,childName)\n * obj.death(name)\n * var param_3 = obj.getInheritanceOrder()\n */",
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{
"lang":"Kotlin",
"langSlug":"kotlin",
"code":"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 */",
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{
"lang":"Rust",
"langSlug":"rust",
"code":"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 */",
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{
"lang":"PHP",
"langSlug":"php",
"code":"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 */",
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{
"lang":"TypeScript",
"langSlug":"typescript",
"code":"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 */",
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{
"lang":"Racket",
"langSlug":"racket",
"code":"(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 )\n ; death : string? -> void?\n (define/public (death name)\n\n )\n ; get-inheritance-order : -> (listof string?)\n (define/public (get-inheritance-order)\n\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))",
"__typename":"CodeSnippetNode"
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{
"lang":"Erlang",
"langSlug":"erlang",
"code":"-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.",
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"lang":"Elixir",
"langSlug":"elixir",
"code":"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.",
"envInfo":"{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 17 standard.</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 17 </code>. Java 8 features such as lambda expressions and stream API can be used. </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 2.7.12</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\\\">will not be maintained past 2020</a>. For the latest Python, please choose Python3 instead.</p>\"], \"c\": [\"C\", \"<p>Compiled with <code>gcc 8.2</code> using the gnu99 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level one optimization (<code>-O1</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://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-9\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></p>\\r\\n\\r\\n<p>Your code is compiled with debug flag enabled (<code>/debug</code>).</p>\"], \"javascript\": [\"JavaScript\", \"<p><code>Node.js 16.13.2</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 <a href=\\\"https://github.com/datastructures-js/priority-queue\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and <a href=\\\"https:
