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        "question": {
            "questionId": "352",
            "questionFrontendId": "352",
            "categoryTitle": "Algorithms",
            "boundTopicId": 1199,
            "title": "Data Stream as Disjoint Intervals",
            "titleSlug": "data-stream-as-disjoint-intervals",
            "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 value)</code> Adds the integer <code>value</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>. The answer should be sorted by <code>start<sub>i</sub></code>.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;SummaryRanges&quot;, &quot;addNum&quot;, &quot;getIntervals&quot;, &quot;addNum&quot;, &quot;getIntervals&quot;, &quot;addNum&quot;, &quot;getIntervals&quot;, &quot;addNum&quot;, &quot;getIntervals&quot;, &quot;addNum&quot;, &quot;getIntervals&quot;]\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>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 &lt;= value &lt;= 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\t<li>At most <code>10<sup>2</sup></code>&nbsp;calls will be made to&nbsp;<code>getIntervals</code>.</li>\n</ul>\n\n<p>&nbsp;</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",
            "translatedTitle": "将数据流变为多个不相交区间",
            "translatedContent": "<p>&nbsp;给你一个由非负整数&nbsp;<code>a<sub>1</sub>, a<sub>2</sub>, ..., a<sub>n</sub></code> 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。</p>\n\n<p>实现 <code>SummaryRanges</code> 类：</p>\n\n<div class=\"original__bRMd\">\n<div>\n<ul>\n\t<li><code>SummaryRanges()</code> 使用一个空数据流初始化对象。</li>\n\t<li><code>void addNum(int val)</code> 向数据流中加入整数 <code>val</code> 。</li>\n\t<li><code>int[][] getIntervals()</code> 以不相交区间&nbsp;<code>[start<sub>i</sub>, end<sub>i</sub>]</code> 的列表形式返回对数据流中整数的总结。</li>\n</ul>\n\n<p>&nbsp;</p>\n\n<p><strong>示例：</strong></p>\n\n<pre>\n<strong>输入：</strong>\n[\"SummaryRanges\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\", \"addNum\", \"getIntervals\"]\n[[], [1], [], [3], [], [7], [], [2], [], [6], []]\n<strong>输出：</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>解释：</strong>\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</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>0 &lt;= val &lt;= 10<sup>4</sup></code></li>\n\t<li>最多调用&nbsp;<code>addNum</code> 和 <code>getIntervals</code> 方法 <code>3 * 10<sup>4</sup></code> 次</li>\n</ul>\n</div>\n</div>\n\n<p>&nbsp;</p>\n\n<p><strong>进阶：</strong>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?</p>\n",
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                    "lang": "C++",
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                    "code": "class SummaryRanges {\npublic:\n    SummaryRanges() {\n\n    }\n    \n    void addNum(int value) {\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(value);\n * vector<vector<int>> param_2 = obj->getIntervals();\n */",
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                    "lang": "Java",
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                    "code": "class SummaryRanges {\n\n    public SummaryRanges() {\n\n    }\n    \n    public void addNum(int value) {\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(value);\n * int[][] param_2 = obj.getIntervals();\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Python",
                    "langSlug": "python",
                    "code": "class SummaryRanges(object):\n\n    def __init__(self):\n\n\n    def addNum(self, value):\n        \"\"\"\n        :type value: 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(value)\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, value: 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(value)\n# param_2 = obj.getIntervals()",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "\n\n\ntypedef struct {\n    \n} SummaryRanges;\n\n\nSummaryRanges* summaryRangesCreate() {\n    \n}\n\nvoid summaryRangesAddNum(SummaryRanges* obj, int value) {\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, value);\n \n * int** param_2 = summaryRangesGetIntervals(obj, retSize, retColSize);\n \n * summaryRangesFree(obj);\n*/",
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                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class SummaryRanges {\n\n    public SummaryRanges() {\n\n    }\n    \n    public void AddNum(int value) {\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(value);\n * int[][] param_2 = obj.GetIntervals();\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "\nvar SummaryRanges = function() {\n\n};\n\n/** \n * @param {number} value\n * @return {void}\n */\nSummaryRanges.prototype.addNum = function(value) {\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(value)\n * var param_2 = obj.getIntervals()\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class SummaryRanges {\n    constructor() {\n        \n    }\n\n    addNum(value: 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(value)\n * var param_2 = obj.getIntervals()\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "PHP",
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                    "code": "class SummaryRanges {\n    /**\n     */\n    function __construct() {\n\n    }\n\n    /**\n     * @param Integer $value\n     * @return NULL\n     */\n    function addNum($value) {\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 * $obj->addNum($value);\n * $ret_2 = $obj->getIntervals();\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Swift",
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                    "code": "\nclass SummaryRanges {\n\n    init() {\n\n    }\n    \n    func addNum(_ value: 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(value)\n * let ret_2: [[Int]] = obj.getIntervals()\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class SummaryRanges() {\n\n    fun addNum(value: 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(value)\n * var param_2 = obj.getIntervals()\n */",
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                    "lang": "Dart",
                    "langSlug": "dart",
                    "code": "class SummaryRanges {\n\n  SummaryRanges() {\n    \n  }\n  \n  void addNum(int value) {\n    \n  }\n  \n  List<List<int>> getIntervals() {\n    \n  }\n}\n\n/**\n * Your SummaryRanges object will be instantiated and called as such:\n * SummaryRanges obj = SummaryRanges();\n * obj.addNum(value);\n * List<List<int>> param2 = obj.getIntervals();\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "type SummaryRanges struct {\n\n}\n\n\nfunc Constructor() SummaryRanges {\n\n}\n\n\nfunc (this *SummaryRanges) AddNum(value 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(value);\n * param_2 := obj.GetIntervals();\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "class SummaryRanges\n    def initialize()\n\n    end\n\n\n=begin\n    :type value: Integer\n    :rtype: Void\n=end\n    def add_num(value)\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(value)\n# param_2 = obj.get_intervals()",
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                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "class SummaryRanges() {\n\n    def addNum(value: 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(value)\n * var param_2 = obj.getIntervals()\n */",
                    "__typename": "CodeSnippetNode"
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                    "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, value: 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(value);\n * let ret_2: Vec<Vec<i32>> = obj.get_intervals();\n */",
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                    "lang": "Racket",
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                    "code": "(define summary-ranges%\n  (class object%\n    (super-new)\n    \n    (init-field)\n    \n    ; add-num : exact-integer? -> void?\n    (define/public (add-num value)\n      )\n    ; get-intervals : -> (listof (listof exact-integer?))\n    (define/public (get-intervals)\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 value)\n;; (define param_2 (send obj get-intervals))",
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                    "code": "-spec summary_ranges_init_() -> any().\nsummary_ranges_init_() ->\n  .\n\n-spec summary_ranges_add_num(Value :: integer()) -> any().\nsummary_ranges_add_num(Value) ->\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(Value),\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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                    "code": "defmodule SummaryRanges do\n  @spec init_() :: any\n  def init_() do\n    \n  end\n\n  @spec add_num(value :: integer) :: any\n  def add_num(value) 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(value)\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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