mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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181 lines
23 KiB
JSON
181 lines
23 KiB
JSON
{
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"data": {
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"question": {
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"questionId": "1775",
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"questionFrontendId": "1656",
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"boundTopicId": null,
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"title": "Design an Ordered Stream",
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"titleSlug": "design-an-ordered-stream",
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"content": "<p>There is a stream of <code>n</code> <code>(idKey, value)</code> pairs arriving in an <strong>arbitrary</strong> order, where <code>idKey</code> is an integer between <code>1</code> and <code>n</code> and <code>value</code> is a string. No two pairs have the same <code>id</code>.</p>\n\n<p>Design a stream that returns the values in <strong>increasing order of their IDs</strong> by returning a <strong>chunk</strong> (list) of values after each insertion. The concatenation of all the <strong>chunks</strong> should result in a list of the sorted values.</p>\n\n<p>Implement the <code>OrderedStream</code> class:</p>\n\n<ul>\n\t<li><code>OrderedStream(int n)</code> Constructs the stream to take <code>n</code> values.</li>\n\t<li><code>String[] insert(int idKey, String value)</code> Inserts the pair <code>(idKey, value)</code> into the stream, then returns the <strong>largest possible chunk</strong> of currently inserted values that appear next in the order.</li>\n</ul>\n\n<p> </p>\n<p><strong>Example:</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/11/10/q1.gif\" style=\"width: 682px; height: 240px;\" /></strong></p>\n\n<pre>\n<strong>Input</strong>\n["OrderedStream", "insert", "insert", "insert", "insert", "insert"]\n[[5], [3, "ccccc"], [1, "aaaaa"], [2, "bbbbb"], [5, "eeeee"], [4, "ddddd"]]\n<strong>Output</strong>\n[null, [], ["aaaaa"], ["bbbbb", "ccccc"], [], ["ddddd", "eeeee"]]\n\n<strong>Explanation</strong>\n// Note that the values ordered by ID is ["aaaaa", "bbbbb", "ccccc", "ddddd", "eeeee"].\nOrderedStream os = new OrderedStream(5);\nos.insert(3, "ccccc"); // Inserts (3, "ccccc"), returns [].\nos.insert(1, "aaaaa"); // Inserts (1, "aaaaa"), returns ["aaaaa"].\nos.insert(2, "bbbbb"); // Inserts (2, "bbbbb"), returns ["bbbbb", "ccccc"].\nos.insert(5, "eeeee"); // Inserts (5, "eeeee"), returns [].\nos.insert(4, "ddddd"); // Inserts (4, "ddddd"), returns ["ddddd", "eeeee"].\n// Concatentating all the chunks returned:\n// [] + ["aaaaa"] + ["bbbbb", "ccccc"] + [] + ["ddddd", "eeeee"] = ["aaaaa", "bbbbb", "ccccc", "ddddd", "eeeee"]\n// The resulting order is the same as the order above.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= n <= 1000</code></li>\n\t<li><code>1 <= id <= n</code></li>\n\t<li><code>value.length == 5</code></li>\n\t<li><code>value</code> consists only of lowercase letters.</li>\n\t<li>Each call to <code>insert</code> will have a unique <code>id.</code></li>\n\t<li>Exactly <code>n</code> calls will be made to <code>insert</code>.</li>\n</ul>\n",
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"translatedTitle": null,
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"translatedContent": null,
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"isPaidOnly": false,
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"difficulty": "Easy",
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"likes": 205,
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"dislikes": 1716,
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"exampleTestcases": "[\"OrderedStream\",\"insert\",\"insert\",\"insert\",\"insert\",\"insert\"]\n[[5],[3,\"ccccc\"],[1,\"aaaaa\"],[2,\"bbbbb\"],[5,\"eeeee\"],[4,\"ddddd\"]]",
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"categoryTitle": "Algorithms",
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"contributors": [],
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"topicTags": [
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{
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"name": "Array",
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"slug": "array",
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"translatedName": null,
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"__typename": "TopicTagNode"
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},
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{
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"name": "Hash Table",
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"slug": "hash-table",
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},
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"name": "Design",
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{
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"name": "Data Stream",
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{
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"lang": "C++",
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"langSlug": "cpp",
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"code": "class OrderedStream {\npublic:\n OrderedStream(int n) {\n \n }\n \n vector<string> insert(int idKey, string value) {\n \n }\n};\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * OrderedStream* obj = new OrderedStream(n);\n * vector<string> param_1 = obj->insert(idKey,value);\n */",
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"__typename": "CodeSnippetNode"
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{
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"lang": "Java",
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"langSlug": "java",
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"code": "class OrderedStream {\n\n public OrderedStream(int n) {\n \n }\n \n public List<String> insert(int idKey, String value) {\n \n }\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * OrderedStream obj = new OrderedStream(n);\n * List<String> param_1 = obj.insert(idKey,value);\n */",
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"__typename": "CodeSnippetNode"
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{
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"lang": "Python",
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"langSlug": "python",
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"code": "class OrderedStream(object):\n\n def __init__(self, n):\n \"\"\"\n :type n: int\n \"\"\"\n \n\n def insert(self, idKey, value):\n \"\"\"\n :type idKey: int\n :type value: str\n :rtype: List[str]\n \"\"\"\n \n\n\n# Your OrderedStream object will be instantiated and called as such:\n# obj = OrderedStream(n)\n# param_1 = obj.insert(idKey,value)",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Python3",
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"langSlug": "python3",
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"code": "class OrderedStream:\n\n def __init__(self, n: int):\n \n\n def insert(self, idKey: int, value: str) -> List[str]:\n \n\n\n# Your OrderedStream object will be instantiated and called as such:\n# obj = OrderedStream(n)\n# param_1 = obj.insert(idKey,value)",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "C",
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"langSlug": "c",
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"code": "\n\n\ntypedef struct {\n \n} OrderedStream;\n\n\nOrderedStream* orderedStreamCreate(int n) {\n \n}\n\nchar ** orderedStreamInsert(OrderedStream* obj, int idKey, char * value, int* retSize) {\n \n}\n\nvoid orderedStreamFree(OrderedStream* obj) {\n \n}\n\n/**\n * Your OrderedStream struct will be instantiated and called as such:\n * OrderedStream* obj = orderedStreamCreate(n);\n * char ** param_1 = orderedStreamInsert(obj, idKey, value, retSize);\n \n * orderedStreamFree(obj);\n*/",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "C#",
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"langSlug": "csharp",
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"code": "public class OrderedStream {\n\n public OrderedStream(int n) {\n \n }\n \n public IList<string> Insert(int idKey, string value) {\n \n }\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * OrderedStream obj = new OrderedStream(n);\n * IList<string> param_1 = obj.Insert(idKey,value);\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @param {number} n\n */\nvar OrderedStream = function(n) {\n \n};\n\n/** \n * @param {number} idKey \n * @param {string} value\n * @return {string[]}\n */\nOrderedStream.prototype.insert = function(idKey, value) {\n \n};\n\n/** \n * Your OrderedStream object will be instantiated and called as such:\n * var obj = new OrderedStream(n)\n * var param_1 = obj.insert(idKey,value)\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "class OrderedStream\n\n=begin\n :type n: Integer\n=end\n def initialize(n)\n \n end\n\n\n=begin\n :type id_key: Integer\n :type value: String\n :rtype: String[]\n=end\n def insert(id_key, value)\n \n end\n\n\nend\n\n# Your OrderedStream object will be instantiated and called as such:\n# obj = OrderedStream.new(n)\n# param_1 = obj.insert(id_key, value)",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Swift",
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"langSlug": "swift",
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"code": "\nclass OrderedStream {\n\n init(_ n: Int) {\n \n }\n \n func insert(_ idKey: Int, _ value: String) -> [String] {\n \n }\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * let obj = OrderedStream(n)\n * let ret_1: [String] = obj.insert(idKey, value)\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Go",
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"langSlug": "golang",
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"code": "type OrderedStream struct {\n \n}\n\n\nfunc Constructor(n int) OrderedStream {\n \n}\n\n\nfunc (this *OrderedStream) Insert(idKey int, value string) []string {\n \n}\n\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * obj := Constructor(n);\n * param_1 := obj.Insert(idKey,value);\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Scala",
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"langSlug": "scala",
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"code": "class OrderedStream(_n: Int) {\n\n def insert(idKey: Int, value: String): List[String] = {\n \n }\n\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * var obj = new OrderedStream(n)\n * var param_1 = obj.insert(idKey,value)\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class OrderedStream(n: Int) {\n\n fun insert(idKey: Int, value: String): List<String> {\n \n }\n\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * var obj = OrderedStream(n)\n * var param_1 = obj.insert(idKey,value)\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Rust",
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"langSlug": "rust",
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"code": "struct OrderedStream {\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 OrderedStream {\n\n fn new(n: i32) -> Self {\n \n }\n \n fn insert(&self, id_key: i32, value: String) -> Vec<String> {\n \n }\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * let obj = OrderedStream::new(n);\n * let ret_1: Vec<String> = obj.insert(idKey, value);\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "PHP",
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"langSlug": "php",
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"code": "class OrderedStream {\n /**\n * @param Integer $n\n */\n function __construct($n) {\n \n }\n \n /**\n * @param Integer $idKey\n * @param String $value\n * @return String[]\n */\n function insert($idKey, $value) {\n \n }\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * $obj = OrderedStream($n);\n * $ret_1 = $obj->insert($idKey, $value);\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "class OrderedStream {\n constructor(n: number) {\n\n }\n\n insert(idKey: number, value: string): string[] {\n\n }\n}\n\n/**\n * Your OrderedStream object will be instantiated and called as such:\n * var obj = new OrderedStream(n)\n * var param_1 = obj.insert(idKey,value)\n */",
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"__typename": "CodeSnippetNode"
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"lang": "Racket",
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"langSlug": "racket",
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"code": "(define ordered-stream%\n (class object%\n (super-new)\n\n ; n : exact-integer?\n (init-field\n n)\n \n ; insert : exact-integer? string? -> (listof string?)\n (define/public (insert id-key value)\n\n )))\n\n;; Your ordered-stream% object will be instantiated and called as such:\n;; (define obj (new ordered-stream% [n n]))\n;; (define param_1 (send obj insert id-key value))",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec ordered_stream_init_(N :: integer()) -> any().\nordered_stream_init_(N) ->\n .\n\n-spec ordered_stream_insert(IdKey :: integer(), Value :: unicode:unicode_binary()) -> [unicode:unicode_binary()].\nordered_stream_insert(IdKey, Value) ->\n .\n\n\n%% Your functions will be called as such:\n%% ordered_stream_init_(N),\n%% Param_1 = ordered_stream_insert(IdKey, Value),\n\n%% ordered_stream_init_ will be called before every test case, in which you can do some necessary initializations.",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Elixir",
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"langSlug": "elixir",
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"code": "defmodule OrderedStream do\n @spec init_(n :: integer) :: any\n def init_(n) do\n\n end\n\n @spec insert(id_key :: integer, value :: String.t) :: [String.t]\n def insert(id_key, value) do\n\n end\nend\n\n# Your functions will be called as such:\n# OrderedStream.init_(n)\n# param_1 = OrderedStream.insert(id_key, value)\n\n# OrderedStream.init_ will be called before every test case, in which you can do some necessary initializations.",
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"__typename": "CodeSnippetNode"
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"hints": [
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"Maintain the next id that should be outputted.",
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"Maintain the ids that were inserted in the stream.",
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"Per each insert, make a loop where you check if the id that has the turn has been inserted, and if so increment the id that has the turn and continue the loop, else break."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "[\"OrderedStream\",\"insert\",\"insert\",\"insert\",\"insert\",\"insert\"]\n[[5],[3,\"ccccc\"],[1,\"aaaaa\"],[2,\"bbbbb\"],[5,\"eeeee\"],[4,\"ddddd\"]]",
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"metaData": "{\n \"classname\": \"OrderedStream\",\n \"constructor\": {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"n\"\n }\n ]\n },\n \"methods\": [\n {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"idKey\"\n },\n {\n \"type\": \"string\",\n \"name\": \"value\"\n }\n ],\n \"name\": \"insert\",\n \"return\": {\n \"type\": \"list<string>\"\n }\n }\n ],\n \"return\": {\n \"type\": \"boolean\"\n },\n \"systemdesign\": true\n}",
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"judgerAvailable": true,
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"judgeType": "large",
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"mysqlSchemas": [],
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"enableRunCode": true,
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"enableTestMode": false,
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"enableDebugger": true,
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"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://github.com/datastructures-js/queue\\\" target=\\\"_blank\\\">datastructures-js/queue</a>.</p>\"], \"ruby\": [\"Ruby\", \"<p><code>Ruby 3.1</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 5.5.2</code>.</p>\"], \"golang\": [\"Go\", \"<p><code>Go 1.17.6</code>.</p>\\r\\n\\r\\n<p>Support <a href=\\\"https://godoc.org/github.com/emirpasic/gods\\\" target=\\\"_blank\\\">https://godoc.org/github.com/emirpasic/gods</a> library.</p>\"], \"python3\": [\"Python3\", \"<p><code>Python 3.10</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 2.13.7</code>.</p>\"], \"kotlin\": [\"Kotlin\", \"<p><code>Kotlin 1.3.10</code>.</p>\"], \"rust\": [\"Rust\", \"<p><code>Rust 1.58.1</code></p>\\r\\n\\r\\n<p>Supports <a href=\\\"https://crates.io/crates/rand\\\" target=\\\"_blank\\\">rand </a> v0.6\\u00a0from crates.io</p>\"], \"php\": [\"PHP\", \"<p><code>PHP 8.1</code>.</p>\\r\\n<p>With bcmath module</p>\"], \"typescript\": [\"Typescript\", \"<p><code>TypeScript 4.5.4, 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 ES2020 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\"], \"racket\": [\"Racket\", \"<p>Run with <code>Racket 8.3</code>.</p>\"], \"erlang\": [\"Erlang\", \"Erlang/OTP 24.2\"], \"elixir\": [\"Elixir\", \"Elixir 1.13.0 with Erlang/OTP 24.2\"]}",
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