mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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171 lines
23 KiB
JSON
171 lines
23 KiB
JSON
{
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"data": {
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"question": {
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"questionId": "352",
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"questionFrontendId": "352",
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"boundTopicId": null,
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"title": "Data Stream as Disjoint Intervals",
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"titleSlug": "data-stream-as-disjoint-intervals",
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"content": "<p>Given a data stream input of non-negative integers <code>a<sub>1</sub>, a<sub>2</sub>, ..., a<sub>n</sub></code>, summarize the numbers seen so far as a list of disjoint intervals.</p>\n\n<p>Implement the <code>SummaryRanges</code> class:</p>\n\n<ul>\n\t<li><code>SummaryRanges()</code> Initializes the object with an empty stream.</li>\n\t<li><code>void addNum(int val)</code> Adds the integer <code>val</code> to the stream.</li>\n\t<li><code>int[][] getIntervals()</code> Returns a summary of the integers in the stream currently as a list of disjoint intervals <code>[start<sub>i</sub>, end<sub>i</sub>]</code>.</li>\n</ul>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n["SummaryRanges", "addNum", "getIntervals", "addNum", "getIntervals", "addNum", "getIntervals", "addNum", "getIntervals", "addNum", "getIntervals"]\n[[], [1], [], [3], [], [7], [], [2], [], [6], []]\n<strong>Output</strong>\n[null, null, [[1, 1]], null, [[1, 1], [3, 3]], null, [[1, 1], [3, 3], [7, 7]], null, [[1, 3], [7, 7]], null, [[1, 3], [6, 7]]]\n\n<strong>Explanation</strong>\nSummaryRanges summaryRanges = new SummaryRanges();\nsummaryRanges.addNum(1); // arr = [1]\nsummaryRanges.getIntervals(); // return [[1, 1]]\nsummaryRanges.addNum(3); // arr = [1, 3]\nsummaryRanges.getIntervals(); // return [[1, 1], [3, 3]]\nsummaryRanges.addNum(7); // arr = [1, 3, 7]\nsummaryRanges.getIntervals(); // return [[1, 1], [3, 3], [7, 7]]\nsummaryRanges.addNum(2); // arr = [1, 2, 3, 7]\nsummaryRanges.getIntervals(); // return [[1, 3], [7, 7]]\nsummaryRanges.addNum(6); // arr = [1, 2, 3, 6, 7]\nsummaryRanges.getIntervals(); // return [[1, 3], [6, 7]]\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 <= val <= 10<sup>4</sup></code></li>\n\t<li>At most <code>3 * 10<sup>4</sup></code> calls will be made to <code>addNum</code> and <code>getIntervals</code>.</li>\n</ul>\n\n<p> </p>\n<p><strong>Follow up:</strong> What if there are lots of merges and the number of disjoint intervals is small compared to the size of the data stream?</p>\n",
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"translatedTitle": null,
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"isPaidOnly": false,
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"difficulty": "Hard",
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"likes": 628,
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"similarQuestions": "[{\"title\": \"Summary Ranges\", \"titleSlug\": \"summary-ranges\", \"difficulty\": \"Easy\", \"translatedTitle\": null}, {\"title\": \"Find Right Interval\", \"titleSlug\": \"find-right-interval\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Range Module\", \"titleSlug\": \"range-module\", \"difficulty\": \"Hard\", \"translatedTitle\": null}]",
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"exampleTestcases": "[\"SummaryRanges\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\"]\n[[],[1],[],[3],[],[7],[],[2],[],[6],[]]",
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"categoryTitle": "Algorithms",
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"name": "Binary Search",
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"lang": "C++",
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"langSlug": "cpp",
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"code": "class SummaryRanges {\npublic:\n SummaryRanges() {\n \n }\n \n void addNum(int val) {\n \n }\n \n vector<vector<int>> getIntervals() {\n \n }\n};\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * SummaryRanges* obj = new SummaryRanges();\n * obj->addNum(val);\n * vector<vector<int>> param_2 = obj->getIntervals();\n */",
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"lang": "Java",
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"langSlug": "java",
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"code": "class SummaryRanges {\n\n public SummaryRanges() {\n \n }\n \n public void addNum(int val) {\n \n }\n \n public int[][] getIntervals() {\n \n }\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * SummaryRanges obj = new SummaryRanges();\n * obj.addNum(val);\n * int[][] param_2 = obj.getIntervals();\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 SummaryRanges(object):\n\n def __init__(self):\n \n\n def addNum(self, val):\n \"\"\"\n :type val: int\n :rtype: None\n \"\"\"\n \n\n def getIntervals(self):\n \"\"\"\n :rtype: List[List[int]]\n \"\"\"\n \n\n\n# Your SummaryRanges object will be instantiated and called as such:\n# obj = SummaryRanges()\n# obj.addNum(val)\n# param_2 = obj.getIntervals()",
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"lang": "Python3",
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"langSlug": "python3",
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"code": "class SummaryRanges:\n\n def __init__(self):\n \n\n def addNum(self, val: int) -> None:\n \n\n def getIntervals(self) -> List[List[int]]:\n \n\n\n# Your SummaryRanges object will be instantiated and called as such:\n# obj = SummaryRanges()\n# obj.addNum(val)\n# param_2 = obj.getIntervals()",
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"__typename": "CodeSnippetNode"
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"lang": "C",
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"langSlug": "c",
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"code": "\n\n\ntypedef struct {\n \n} SummaryRanges;\n\n\nSummaryRanges* summaryRangesCreate() {\n \n}\n\nvoid summaryRangesAddNum(SummaryRanges* obj, int val) {\n \n}\n\nint** summaryRangesGetIntervals(SummaryRanges* obj, int* retSize, int** retColSize) {\n \n}\n\nvoid summaryRangesFree(SummaryRanges* obj) {\n \n}\n\n/**\n * Your SummaryRanges struct will be instantiated and called as such:\n * SummaryRanges* obj = summaryRangesCreate();\n * summaryRangesAddNum(obj, val);\n \n * int** param_2 = summaryRangesGetIntervals(obj, retSize, retColSize);\n \n * summaryRangesFree(obj);\n*/",
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{
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"lang": "C#",
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"langSlug": "csharp",
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"code": "public class SummaryRanges {\n\n public SummaryRanges() {\n \n }\n \n public void AddNum(int val) {\n \n }\n \n public int[][] GetIntervals() {\n \n }\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * SummaryRanges obj = new SummaryRanges();\n * obj.AddNum(val);\n * int[][] param_2 = obj.GetIntervals();\n */",
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"__typename": "CodeSnippetNode"
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "\nvar SummaryRanges = function() {\n \n};\n\n/** \n * @param {number} val\n * @return {void}\n */\nSummaryRanges.prototype.addNum = function(val) {\n \n};\n\n/**\n * @return {number[][]}\n */\nSummaryRanges.prototype.getIntervals = function() {\n \n};\n\n/** \n * Your SummaryRanges object will be instantiated and called as such:\n * var obj = new SummaryRanges()\n * obj.addNum(val)\n * var param_2 = obj.getIntervals()\n */",
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"__typename": "CodeSnippetNode"
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "class SummaryRanges\n def initialize()\n \n end\n\n\n=begin\n :type val: Integer\n :rtype: Void\n=end\n def add_num(val)\n \n end\n\n\n=begin\n :rtype: Integer[][]\n=end\n def get_intervals()\n \n end\n\n\nend\n\n# Your SummaryRanges object will be instantiated and called as such:\n# obj = SummaryRanges.new()\n# obj.add_num(val)\n# param_2 = obj.get_intervals()",
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"lang": "Swift",
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"langSlug": "swift",
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"code": "\nclass SummaryRanges {\n\n init() {\n \n }\n \n func addNum(_ val: Int) {\n \n }\n \n func getIntervals() -> [[Int]] {\n \n }\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * let obj = SummaryRanges()\n * obj.addNum(val)\n * let ret_2: [[Int]] = obj.getIntervals()\n */",
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"__typename": "CodeSnippetNode"
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{
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"lang": "Go",
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"langSlug": "golang",
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"code": "type SummaryRanges struct {\n \n}\n\n\nfunc Constructor() SummaryRanges {\n \n}\n\n\nfunc (this *SummaryRanges) AddNum(val int) {\n \n}\n\n\nfunc (this *SummaryRanges) GetIntervals() [][]int {\n \n}\n\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * obj := Constructor();\n * obj.AddNum(val);\n * param_2 := obj.GetIntervals();\n */",
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"__typename": "CodeSnippetNode"
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{
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"lang": "Scala",
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"langSlug": "scala",
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"code": "class SummaryRanges() {\n\n def addNum(`val`: Int) {\n \n }\n\n def getIntervals(): Array[Array[Int]] = {\n \n }\n\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * var obj = new SummaryRanges()\n * obj.addNum(`val`)\n * var param_2 = obj.getIntervals()\n */",
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"__typename": "CodeSnippetNode"
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{
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class SummaryRanges() {\n\n fun addNum(`val`: Int) {\n \n }\n\n fun getIntervals(): Array<IntArray> {\n \n }\n\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * var obj = SummaryRanges()\n * obj.addNum(`val`)\n * var param_2 = obj.getIntervals()\n */",
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"lang": "Rust",
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"langSlug": "rust",
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"code": "struct SummaryRanges {\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 SummaryRanges {\n\n fn new() -> Self {\n \n }\n \n fn add_num(&self, val: i32) {\n \n }\n \n fn get_intervals(&self) -> Vec<Vec<i32>> {\n \n }\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * let obj = SummaryRanges::new();\n * obj.add_num(val);\n * let ret_2: Vec<Vec<i32>> = obj.get_intervals();\n */",
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"__typename": "CodeSnippetNode"
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"lang": "PHP",
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"langSlug": "php",
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"code": "class SummaryRanges {\n /**\n */\n function __construct() {\n \n }\n \n /**\n * @param Integer $val\n * @return NULL\n */\n function addNum($val) {\n \n }\n \n /**\n * @return Integer[][]\n */\n function getIntervals() {\n \n }\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * $obj = SummaryRanges();\n * $obj->addNum($val);\n * $ret_2 = $obj->getIntervals();\n */",
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"__typename": "CodeSnippetNode"
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "class SummaryRanges {\n constructor() {\n\n }\n\n addNum(val: number): void {\n\n }\n\n getIntervals(): number[][] {\n\n }\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * var obj = new SummaryRanges()\n * obj.addNum(val)\n * var param_2 = obj.getIntervals()\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 summary-ranges%\n (class object%\n (super-new)\n (init-field)\n \n ; add-num : exact-integer? -> void?\n (define/public (add-num val)\n\n )\n ; get-intervals : -> (listof (listof exact-integer?))\n (define/public (get-intervals)\n\n )))\n\n;; Your summary-ranges% object will be instantiated and called as such:\n;; (define obj (new summary-ranges%))\n;; (send obj add-num val)\n;; (define param_2 (send obj get-intervals))",
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"__typename": "CodeSnippetNode"
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec summary_ranges_init_() -> any().\nsummary_ranges_init_() ->\n .\n\n-spec summary_ranges_add_num(Val :: integer()) -> any().\nsummary_ranges_add_num(Val) ->\n .\n\n-spec summary_ranges_get_intervals() -> [[integer()]].\nsummary_ranges_get_intervals() ->\n .\n\n\n%% Your functions will be called as such:\n%% summary_ranges_init_(),\n%% summary_ranges_add_num(Val),\n%% Param_2 = summary_ranges_get_intervals(),\n\n%% summary_ranges_init_ will be called before every test case, in which you can do some necessary initializations.",
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"lang": "Elixir",
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"langSlug": "elixir",
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"code": "defmodule SummaryRanges do\n @spec init_() :: any\n def init_() do\n\n end\n\n @spec add_num(val :: integer) :: any\n def add_num(val) do\n\n end\n\n @spec get_intervals() :: [[integer]]\n def get_intervals() do\n\n end\nend\n\n# Your functions will be called as such:\n# SummaryRanges.init_()\n# SummaryRanges.add_num(val)\n# param_2 = SummaryRanges.get_intervals()\n\n# SummaryRanges.init_ will be called before every test case, in which you can do some necessary initializations.",
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"sampleTestCase": "[\"SummaryRanges\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\"]\n[[],[1],[],[3],[],[7],[],[2],[],[6],[]]",
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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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