{ "data": { "question": { "questionId": "432", "questionFrontendId": "432", "categoryTitle": "Algorithms", "boundTopicId": 1900, "title": "All O`one Data Structure", "titleSlug": "all-oone-data-structure", "content": "

Design a data structure to store the strings' count with the ability to return the strings with minimum and maximum counts.

\n\n

Implement the AllOne class:

\n\n\n\n

Note that each function must run in O(1) average time complexity.

\n\n

 

\n

Example 1:

\n\n
\nInput\n["AllOne", "inc", "inc", "getMaxKey", "getMinKey", "inc", "getMaxKey", "getMinKey"]\n[[], ["hello"], ["hello"], [], [], ["leet"], [], []]\nOutput\n[null, null, null, "hello", "hello", null, "hello", "leet"]\n\nExplanation\nAllOne allOne = new AllOne();\nallOne.inc("hello");\nallOne.inc("hello");\nallOne.getMaxKey(); // return "hello"\nallOne.getMinKey(); // return "hello"\nallOne.inc("leet");\nallOne.getMaxKey(); // return "hello"\nallOne.getMinKey(); // return "leet"\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "全 O(1) 的数据结构", "translatedContent": "

请你设计一个用于存储字符串计数的数据结构，并能够返回计数最小和最大的字符串。

\n\n

实现 AllOne 类：

\n\n\n\n

注意：每个函数都应当满足 O(1) 平均时间复杂度。

\n\n

 

\n\n

示例：

\n\n
\n输入\n[\"AllOne\", \"inc\", \"inc\", \"getMaxKey\", \"getMinKey\", \"inc\", \"getMaxKey\", \"getMinKey\"]\n[[], [\"hello\"], [\"hello\"], [], [], [\"leet\"], [], []]\n输出\n[null, null, null, \"hello\", \"hello\", null, \"hello\", \"leet\"]\n\n解释\nAllOne allOne = new AllOne();\nallOne.inc(\"hello\");\nallOne.inc(\"hello\");\nallOne.getMaxKey(); // 返回 \"hello\"\nallOne.getMinKey(); // 返回 \"hello\"\nallOne.inc(\"leet\");\nallOne.getMaxKey(); // 返回 \"hello\"\nallOne.getMinKey(); // 返回 \"leet\"\n
\n\n

 

\n\n

提示：

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"translatedName": "链表", "__typename": "TopicTagNode" }, { "name": "Doubly-Linked List", "slug": "doubly-linked-list", "translatedName": "双向链表", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": [ { "lang": "C++", "langSlug": "cpp", "code": "class AllOne {\npublic:\n AllOne() {\n \n }\n \n void inc(string key) {\n \n }\n \n void dec(string key) {\n \n }\n \n string getMaxKey() {\n \n }\n \n string getMinKey() {\n \n }\n};\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * AllOne* obj = new AllOne();\n * obj->inc(key);\n * obj->dec(key);\n * string param_3 = obj->getMaxKey();\n * string param_4 = obj->getMinKey();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Java", "langSlug": "java", "code": "class AllOne {\n\n public AllOne() {\n \n }\n \n public void inc(String key) {\n \n }\n \n public void dec(String key) {\n \n }\n \n public String getMaxKey() {\n \n }\n \n public String getMinKey() {\n \n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * AllOne obj = new AllOne();\n * obj.inc(key);\n * obj.dec(key);\n * String param_3 = obj.getMaxKey();\n * String param_4 = obj.getMinKey();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "code": "class AllOne:\n\n def __init__(self):\n \n\n def inc(self, key: str) -> None:\n \n\n def dec(self, key: str) -> None:\n \n\n def getMaxKey(self) -> str:\n \n\n def getMinKey(self) -> str:\n \n\n\n# Your AllOne object will be instantiated and called as such:\n# obj = AllOne()\n# obj.inc(key)\n# obj.dec(key)\n# param_3 = obj.getMaxKey()\n# param_4 = obj.getMinKey()", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "code": "class AllOne(object):\n\n def __init__(self):\n \n\n def inc(self, key):\n \"\"\"\n :type key: str\n :rtype: None\n \"\"\"\n \n\n def dec(self, key):\n \"\"\"\n :type key: str\n :rtype: None\n \"\"\"\n \n\n def getMaxKey(self):\n \"\"\"\n :rtype: str\n \"\"\"\n \n\n def getMinKey(self):\n \"\"\"\n :rtype: str\n \"\"\"\n \n\n\n# Your AllOne object will be instantiated and called as such:\n# obj = AllOne()\n# obj.inc(key)\n# obj.dec(key)\n# param_3 = obj.getMaxKey()\n# param_4 = obj.getMinKey()", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "\nvar AllOne = function() {\n \n};\n\n/** \n * @param {string} key\n * @return {void}\n */\nAllOne.prototype.inc = function(key) {\n \n};\n\n/** \n * @param {string} key\n * @return {void}\n */\nAllOne.prototype.dec = function(key) {\n \n};\n\n/**\n * @return {string}\n */\nAllOne.prototype.getMaxKey = function() {\n \n};\n\n/**\n * @return {string}\n */\nAllOne.prototype.getMinKey = function() {\n \n};\n\n/** \n * Your AllOne object will be instantiated and called as such:\n * var obj = new AllOne()\n * obj.inc(key)\n * obj.dec(key)\n * var param_3 = obj.getMaxKey()\n * var param_4 = obj.getMinKey()\n */", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "code": "class AllOne {\n constructor() {\n \n }\n\n inc(key: string): void {\n \n }\n\n dec(key: string): void {\n \n }\n\n getMaxKey(): string {\n \n }\n\n getMinKey(): string {\n \n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * var obj = new AllOne()\n * obj.inc(key)\n * obj.dec(key)\n * var param_3 = obj.getMaxKey()\n * var param_4 = obj.getMinKey()\n */", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "code": "public class AllOne {\n\n public AllOne() {\n \n }\n \n public void Inc(string key) {\n \n }\n \n public void Dec(string key) {\n \n }\n \n public string GetMaxKey() {\n \n }\n \n public string GetMinKey() {\n \n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * AllOne obj = new AllOne();\n * obj.Inc(key);\n * obj.Dec(key);\n * string param_3 = obj.GetMaxKey();\n * string param_4 = obj.GetMinKey();\n */", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "\n\n\ntypedef struct {\n \n} AllOne;\n\n\nAllOne* allOneCreate() {\n \n}\n\nvoid allOneInc(AllOne* obj, char* key) {\n \n}\n\nvoid allOneDec(AllOne* obj, char* key) {\n \n}\n\nchar* allOneGetMaxKey(AllOne* obj) {\n \n}\n\nchar* allOneGetMinKey(AllOne* obj) {\n \n}\n\nvoid allOneFree(AllOne* obj) {\n \n}\n\n/**\n * Your AllOne struct will be instantiated and called as such:\n * AllOne* obj = allOneCreate();\n * allOneInc(obj, key);\n \n * allOneDec(obj, key);\n \n * char* param_3 = allOneGetMaxKey(obj);\n \n * char* param_4 = allOneGetMinKey(obj);\n \n * allOneFree(obj);\n*/", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "type AllOne struct {\n \n}\n\n\nfunc Constructor() AllOne {\n \n}\n\n\nfunc (this *AllOne) Inc(key string) {\n \n}\n\n\nfunc (this *AllOne) Dec(key string) {\n \n}\n\n\nfunc (this *AllOne) GetMaxKey() string {\n \n}\n\n\nfunc (this *AllOne) GetMinKey() string {\n \n}\n\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * obj := Constructor();\n * obj.Inc(key);\n * obj.Dec(key);\n * param_3 := obj.GetMaxKey();\n * param_4 := obj.GetMinKey();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class AllOne() {\n\n fun inc(key: String) {\n \n }\n\n fun dec(key: String) {\n \n }\n\n fun getMaxKey(): String {\n \n }\n\n fun getMinKey(): String {\n \n }\n\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * var obj = AllOne()\n * obj.inc(key)\n * obj.dec(key)\n * var param_3 = obj.getMaxKey()\n * var param_4 = obj.getMinKey()\n */", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "code": "\nclass AllOne {\n\n init() {\n \n }\n \n func inc(_ key: String) {\n \n }\n \n func dec(_ key: String) {\n \n }\n \n func getMaxKey() -> String {\n \n }\n \n func getMinKey() -> String {\n \n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * let obj = AllOne()\n * obj.inc(key)\n * obj.dec(key)\n * let ret_3: String = obj.getMaxKey()\n * let ret_4: String = obj.getMinKey()\n */", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "code": "struct AllOne {\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 AllOne {\n\n fn new() -> Self {\n \n }\n \n fn inc(&self, key: String) {\n \n }\n \n fn dec(&self, key: String) {\n \n }\n \n fn get_max_key(&self) -> String {\n \n }\n \n fn get_min_key(&self) -> String {\n \n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * let obj = AllOne::new();\n * obj.inc(key);\n * obj.dec(key);\n * let ret_3: String = obj.get_max_key();\n * let ret_4: String = obj.get_min_key();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "code": "class AllOne\n def initialize()\n \n end\n\n\n=begin\n :type key: String\n :rtype: Void\n=end\n def inc(key)\n \n end\n\n\n=begin\n :type key: String\n :rtype: Void\n=end\n def dec(key)\n \n end\n\n\n=begin\n :rtype: String\n=end\n def get_max_key()\n \n end\n\n\n=begin\n :rtype: String\n=end\n def get_min_key()\n \n end\n\n\nend\n\n# Your AllOne object will be instantiated and called as such:\n# obj = AllOne.new()\n# obj.inc(key)\n# obj.dec(key)\n# param_3 = obj.get_max_key()\n# param_4 = obj.get_min_key()", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "code": "class AllOne {\n /**\n */\n function __construct() {\n \n }\n \n /**\n * @param String $key\n * @return NULL\n */\n function inc($key) {\n \n }\n \n /**\n * @param String $key\n * @return NULL\n */\n function dec($key) {\n \n }\n \n /**\n * @return String\n */\n function getMaxKey() {\n \n }\n \n /**\n * @return String\n */\n function getMinKey() {\n \n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * $obj = AllOne();\n * $obj->inc($key);\n * $obj->dec($key);\n * $ret_3 = $obj->getMaxKey();\n * $ret_4 = $obj->getMinKey();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Dart", "langSlug": "dart", "code": "class AllOne {\n\n AllOne() {\n \n }\n \n void inc(String key) {\n \n }\n \n void dec(String key) {\n \n }\n \n String getMaxKey() {\n \n }\n \n String getMinKey() {\n \n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * AllOne obj = AllOne();\n * obj.inc(key);\n * obj.dec(key);\n * String param3 = obj.getMaxKey();\n * String param4 = obj.getMinKey();\n */", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "code": "class AllOne() {\n\n def inc(key: String): Unit = {\n \n }\n\n def dec(key: String): Unit = {\n \n }\n\n def getMaxKey(): String = {\n \n }\n\n def getMinKey(): String = {\n \n }\n\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * val obj = new AllOne()\n * obj.inc(key)\n * obj.dec(key)\n * val param_3 = obj.getMaxKey()\n * val param_4 = obj.getMinKey()\n */", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "code": "defmodule AllOne do\n @spec init_() :: any\n def init_() do\n \n end\n\n @spec inc(key :: String.t) :: any\n def inc(key) do\n \n end\n\n @spec dec(key :: String.t) :: any\n def dec(key) do\n \n end\n\n @spec get_max_key() :: String.t\n def get_max_key() do\n \n end\n\n @spec get_min_key() :: String.t\n def get_min_key() do\n \n end\nend\n\n# Your functions will be called as such:\n# AllOne.init_()\n# AllOne.inc(key)\n# AllOne.dec(key)\n# param_3 = AllOne.get_max_key()\n# param_4 = AllOne.get_min_key()\n\n# AllOne.init_ will be called before every test case, in which you can do some necessary initializations.", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec all_one_init_() -> any().\nall_one_init_() ->\n .\n\n-spec all_one_inc(Key :: unicode:unicode_binary()) -> any().\nall_one_inc(Key) ->\n .\n\n-spec all_one_dec(Key :: unicode:unicode_binary()) -> any().\nall_one_dec(Key) ->\n .\n\n-spec all_one_get_max_key() -> unicode:unicode_binary().\nall_one_get_max_key() ->\n .\n\n-spec all_one_get_min_key() -> unicode:unicode_binary().\nall_one_get_min_key() ->\n .\n\n\n%% Your functions will be called as such:\n%% all_one_init_(),\n%% all_one_inc(Key),\n%% all_one_dec(Key),\n%% Param_3 = all_one_get_max_key(),\n%% Param_4 = all_one_get_min_key(),\n\n%% all_one_init_ will be called before every test case, in which you can do some necessary initializations.", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "code": "(define all-one%\n (class object%\n (super-new)\n \n (init-field)\n \n ; inc : string? -> void?\n (define/public (inc key)\n )\n ; dec : string? -> void?\n (define/public (dec key)\n )\n ; get-max-key : -> string?\n (define/public (get-max-key)\n )\n ; get-min-key : -> string?\n (define/public (get-min-key)\n )))\n\n;; Your all-one% object will be instantiated and called as such:\n;; (define obj (new all-one%))\n;; (send obj inc key)\n;; (send obj dec key)\n;; (define param_3 (send obj get-max-key))\n;; (define param_4 (send obj get-min-key))", "__typename": "CodeSnippetNode" }, { "lang": "Cangjie", "langSlug": "cangjie", "code": "class AllOne {\n init() {\n\n }\n \n func inc(key: String): Unit {\n\n }\n \n func dec(key: String): Unit {\n\n }\n \n func getMaxKey(): String {\n\n }\n \n func getMinKey(): String {\n\n }\n}\n\n/**\n * Your AllOne object will be instantiated and called as such:\n * let obj: AllOne = AllOne()\n * obj.inc(key)\n * obj.dec(key)\n * let param_3 = obj.getMaxKey()\n * let param_4 = obj.getMinKey()\n */", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"33.3K\", \"totalSubmission\": \"71.9K\", \"totalAcceptedRaw\": 33281, \"totalSubmissionRaw\": 71882, \"acRate\": \"46.3%\"}", "hints": [], "solution": null, "status": null, "sampleTestCase": "[\"AllOne\",\"inc\",\"inc\",\"getMaxKey\",\"getMinKey\",\"inc\",\"getMaxKey\",\"getMinKey\"]\n[[],[\"hello\"],[\"hello\"],[],[],[\"leet\"],[],[]]", "metaData": "{\n \"classname\": \"AllOne\",\n \"constructor\": {\n \"params\": []\n },\n \"methods\": [\n {\n \"params\": [\n {\n \"type\": \"string\",\n \"name\": \"key\"\n }\n ],\n \"return\": {\n \"type\": \"void\"\n },\n \"name\": \"inc\"\n },\n {\n \"params\": [\n {\n \"type\": \"string\",\n \"name\": \"key\"\n }\n ],\n \"return\": {\n \"type\": \"void\"\n },\n \"name\": \"dec\"\n },\n {\n \"params\": [],\n \"return\": {\n \"type\": \"string\"\n },\n \"name\": \"getMaxKey\"\n },\n {\n \"params\": [],\n \"return\": {\n \"type\": \"string\"\n },\n \"name\": \"getMinKey\"\n }\n ],\n \"return\": {\n \"type\": \"boolean\"\n },\n \"systemdesign\": true\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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