{ "data": { "question": { "questionId": "352", "questionFrontendId": "352", "categoryTitle": "Algorithms", "boundTopicId": 1199, "title": "Data Stream as Disjoint Intervals", "titleSlug": "data-stream-as-disjoint-intervals", "content": "

Given a data stream input of non-negative integers a1, a2, ..., an, summarize the numbers seen so far as a list of disjoint intervals.

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Implement the SummaryRanges class:

\n\n\n\n

 

\n

Example 1:

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\nInput\n["SummaryRanges", "addNum", "getIntervals", "addNum", "getIntervals", "addNum", "getIntervals", "addNum", "getIntervals", "addNum", "getIntervals"]\n[[], [1], [], [3], [], [7], [], [2], [], [6], []]\nOutput\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\nExplanation\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
\n\n

 

\n

Constraints:

\n\n\n\n

 

\n

Follow up: What if there are lots of merges and the number of disjoint intervals is small compared to the size of the data stream?

\n", "translatedTitle": "将数据流变为多个不相交区间", "translatedContent": "

 给你一个由非负整数 a1, a2, ..., an 组成的数据流输入，请你将到目前为止看到的数字总结为不相交的区间列表。

\n\n

实现 SummaryRanges 类：

\n\n
\n
\n\n\n

 

\n\n

示例：

\n\n
\n输入：\n[\"SummaryRanges\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\"]\n[[], [1], [], [3], [], [7], [], [2], [], [6], []]\n输出：\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解释：\nSummaryRanges summaryRanges = new SummaryRanges();\nsummaryRanges.addNum(1);      // arr = [1]\nsummaryRanges.getIntervals(); // 返回 [[1, 1]]\nsummaryRanges.addNum(3);      // arr = [1, 3]\nsummaryRanges.getIntervals(); // 返回 [[1, 1], [3, 3]]\nsummaryRanges.addNum(7);      // arr = [1, 3, 7]\nsummaryRanges.getIntervals(); // 返回 [[1, 1], [3, 3], [7, 7]]\nsummaryRanges.addNum(2);      // arr = [1, 2, 3, 7]\nsummaryRanges.getIntervals(); // 返回 [[1, 3], [7, 7]]\nsummaryRanges.addNum(6);      // arr = [1, 2, 3, 6, 7]\nsummaryRanges.getIntervals(); // 返回 [[1, 3], [6, 7]]\n
\n\n

 

\n\n

提示：

\n\n\n
\n
\n\n

 

\n\n

进阶：如果存在大量合并，并且与数据流的大小相比，不相交区间的数量很小，该怎么办?

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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 */", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "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()", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "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()", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "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*/", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "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 */", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "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 */", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "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()", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "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 */", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "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 */", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "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 */", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class SummaryRanges() {\n\n fun addNum(`val`: Int) {\n\n }\n\n fun getIntervals(): Array {\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 */", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "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> {\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> = obj.get_intervals();\n */", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "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 */", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "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 */", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "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))", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "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.", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "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.", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"22.4K\", \"totalSubmission\": \"33.1K\", \"totalAcceptedRaw\": 22384, \"totalSubmissionRaw\": 33103, \"acRate\": \"67.6%\"}", "hints": [], "solution": null, "status": null, "sampleTestCase": "[\"SummaryRanges\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\",\"addNum\",\"getIntervals\"]\n[[],[1],[],[3],[],[7],[],[2],[],[6],[]]", "metaData": "{\n \"classname\": \"SummaryRanges\",\n \"constructor\": {\n \"params\": []\n },\n \"methods\": [\n {\n \"params\": [\n {\n \"type\": \"integer\",\n \"name\": \"val\"\n }\n ],\n \"return\": {\n \"type\": \"void\"\n },\n \"name\": \"addNum\"\n },\n {\n \"params\": [],\n \"return\": {\n \"type\": \"integer[][]\"\n },\n \"name\": \"getIntervals\"\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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