leetcode-problemset/leetcode-cn/originData/my-calendar-ii.json

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    "data": {
        "question": {
            "questionId": "731",
            "questionFrontendId": "731",
            "categoryTitle": "Algorithms",
            "boundTopicId": 1541,
            "title": "My Calendar II",
            "titleSlug": "my-calendar-ii",
            "content": "<p>You are implementing a program to use as your calendar. We can add a new event if adding the event will not cause a <strong>triple booking</strong>.</p>\n\n<p>A <strong>triple booking</strong> happens when three events have some non-empty intersection (i.e., some moment is common to all the three events.).</p>\n\n<p>The event can be represented as a pair of integers <code>start</code> and <code>end</code> that represents a booking on the half-open interval <code>[start, end)</code>, the range of real numbers <code>x</code> such that <code>start &lt;= x &lt; end</code>.</p>\n\n<p>Implement the <code>MyCalendarTwo</code> class:</p>\n\n<ul>\n\t<li><code>MyCalendarTwo()</code> Initializes the calendar object.</li>\n\t<li><code>boolean book(int start, int end)</code> Returns <code>true</code> if the event can be added to the calendar successfully without causing a <strong>triple booking</strong>. Otherwise, return <code>false</code> and do not add the event to the calendar.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;MyCalendarTwo&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;]\n[[], [10, 20], [50, 60], [10, 40], [5, 15], [5, 10], [25, 55]]\n<strong>Output</strong>\n[null, true, true, true, false, true, true]\n\n<strong>Explanation</strong>\nMyCalendarTwo myCalendarTwo = new MyCalendarTwo();\nmyCalendarTwo.book(10, 20); // return True, The event can be booked. \nmyCalendarTwo.book(50, 60); // return True, The event can be booked. \nmyCalendarTwo.book(10, 40); // return True, The event can be double booked. \nmyCalendarTwo.book(5, 15);  // return False, The event cannot be booked, because it would result in a triple booking.\nmyCalendarTwo.book(5, 10); // return True, The event can be booked, as it does not use time 10 which is already double booked.\nmyCalendarTwo.book(25, 55); // return True, The event can be booked, as the time in [25, 40) will be double booked with the third event, the time [40, 50) will be single booked, and the time [50, 55) will be double booked with the second event.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 &lt;= start &lt; end &lt;= 10<sup>9</sup></code></li>\n\t<li>At most <code>1000</code> calls will be made to <code>book</code>.</li>\n</ul>\n",
            "translatedTitle": "我的日程安排表 II",
            "translatedContent": "<p>实现一个 <code>MyCalendar</code> 类来存放你的日程安排。如果要添加的时间内不会导致三重预订时，则可以存储这个新的日程安排。</p>\n\n<p><code>MyCalendar</code> 有一个 <code>book(int start, int end)</code>方法。它意味着在 <code>start</code> 到 <code>end</code> 时间内增加一个日程安排，注意，这里的时间是半开区间，即 <code>[start, end)</code>, 实数&nbsp;<code>x</code> 的范围为， &nbsp;<code>start &lt;= x &lt; end</code>。</p>\n\n<p>当三个日程安排有一些时间上的交叉时（例如三个日程安排都在同一时间内），就会产生三重预订。</p>\n\n<p>每次调用 <code>MyCalendar.book</code>方法时，如果可以将日程安排成功添加到日历中而不会导致三重预订，返回 <code>true</code>。否则，返回 <code>false</code> 并且不要将该日程安排添加到日历中。</p>\n\n<p>请按照以下步骤调用<code>MyCalendar</code> 类: <code>MyCalendar cal = new MyCalendar();</code> <code>MyCalendar.book(start, end)</code></p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例：</strong></p>\n\n<pre>MyCalendar();\nMyCalendar.book(10, 20); // returns true\nMyCalendar.book(50, 60); // returns true\nMyCalendar.book(10, 40); // returns true\nMyCalendar.book(5, 15); // returns false\nMyCalendar.book(5, 10); // returns true\nMyCalendar.book(25, 55); // returns true\n<strong>解释：</strong> \n前两个日程安排可以添加至日历中。 第三个日程安排会导致双重预订，但可以添加至日历中。\n第四个日程安排活动（5,15）不能添加至日历中，因为它会导致三重预订。\n第五个日程安排（5,10）可以添加至日历中，因为它未使用已经双重预订的时间10。\n第六个日程安排（25,55）可以添加至日历中，因为时间 [25,40] 将和第三个日程安排双重预订；\n时间 [40,50] 将单独预订，时间 [50,55）将和第二个日程安排双重预订。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li>每个测试用例，调用&nbsp;<code>MyCalendar.book</code>&nbsp;函数最多不超过&nbsp;<code>1000</code>次。</li>\n\t<li>调用函数&nbsp;<code>MyCalendar.book(start, end)</code>时，&nbsp;<code>start</code> 和&nbsp;<code>end</code> 的取值范围为&nbsp;<code>[0, 10^9]</code>。</li>\n</ul>\n",
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            "difficulty": "Medium",
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                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "class MyCalendarTwo {\npublic:\n    MyCalendarTwo() {\n\n    }\n    \n    bool book(int start, int end) {\n\n    }\n};\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * MyCalendarTwo* obj = new MyCalendarTwo();\n * bool param_1 = obj->book(start,end);\n */",
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                {
                    "lang": "Java",
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                    "code": "class MyCalendarTwo {\n\n    public MyCalendarTwo() {\n\n    }\n    \n    public boolean book(int start, int end) {\n\n    }\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * MyCalendarTwo obj = new MyCalendarTwo();\n * boolean param_1 = obj.book(start,end);\n */",
                    "__typename": "CodeSnippetNode"
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                    "lang": "Python",
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                    "code": "class MyCalendarTwo(object):\n\n    def __init__(self):\n\n\n    def book(self, start, end):\n        \"\"\"\n        :type start: int\n        :type end: int\n        :rtype: bool\n        \"\"\"\n\n\n\n# Your MyCalendarTwo object will be instantiated and called as such:\n# obj = MyCalendarTwo()\n# param_1 = obj.book(start,end)",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "class MyCalendarTwo:\n\n    def __init__(self):\n\n\n    def book(self, start: int, end: int) -> bool:\n\n\n\n# Your MyCalendarTwo object will be instantiated and called as such:\n# obj = MyCalendarTwo()\n# param_1 = obj.book(start,end)",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "\n\n\ntypedef struct {\n\n} MyCalendarTwo;\n\n\nMyCalendarTwo* myCalendarTwoCreate() {\n\n}\n\nbool myCalendarTwoBook(MyCalendarTwo* obj, int start, int end) {\n\n}\n\nvoid myCalendarTwoFree(MyCalendarTwo* obj) {\n\n}\n\n/**\n * Your MyCalendarTwo struct will be instantiated and called as such:\n * MyCalendarTwo* obj = myCalendarTwoCreate();\n * bool param_1 = myCalendarTwoBook(obj, start, end);\n \n * myCalendarTwoFree(obj);\n*/",
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                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class MyCalendarTwo {\n\n    public MyCalendarTwo() {\n\n    }\n    \n    public bool Book(int start, int end) {\n\n    }\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * MyCalendarTwo obj = new MyCalendarTwo();\n * bool param_1 = obj.Book(start,end);\n */",
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                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "\nvar MyCalendarTwo = function() {\n\n};\n\n/** \n * @param {number} start \n * @param {number} end\n * @return {boolean}\n */\nMyCalendarTwo.prototype.book = function(start, end) {\n\n};\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * var obj = new MyCalendarTwo()\n * var param_1 = obj.book(start,end)\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Ruby",
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                    "code": "class MyCalendarTwo\n    def initialize()\n\n    end\n\n\n=begin\n    :type start: Integer\n    :type end: Integer\n    :rtype: Boolean\n=end\n    def book(start, end)\n\n    end\n\n\nend\n\n# Your MyCalendarTwo object will be instantiated and called as such:\n# obj = MyCalendarTwo.new()\n# param_1 = obj.book(start, end)",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "\nclass MyCalendarTwo {\n\n    init() {\n\n    }\n    \n    func book(_ start: Int, _ end: Int) -> Bool {\n\n    }\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * let obj = MyCalendarTwo()\n * let ret_1: Bool = obj.book(start, end)\n */",
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                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "type MyCalendarTwo struct {\n\n}\n\n\nfunc Constructor() MyCalendarTwo {\n\n}\n\n\nfunc (this *MyCalendarTwo) Book(start int, end int) bool {\n\n}\n\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * obj := Constructor();\n * param_1 := obj.Book(start,end);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "class MyCalendarTwo() {\n\n    def book(start: Int, end: Int): Boolean = {\n        \n    }\n\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * var obj = new MyCalendarTwo()\n * var param_1 = obj.book(start,end)\n */",
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                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class MyCalendarTwo() {\n\n    fun book(start: Int, end: Int): Boolean {\n\n    }\n\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * var obj = MyCalendarTwo()\n * var param_1 = obj.book(start,end)\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "struct MyCalendarTwo {\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 MyCalendarTwo {\n\n    fn new() -> Self {\n\n    }\n    \n    fn book(&self, start: i32, end: i32) -> bool {\n\n    }\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * let obj = MyCalendarTwo::new();\n * let ret_1: bool = obj.book(start, end);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "class MyCalendarTwo {\n    /**\n     */\n    function __construct() {\n\n    }\n\n    /**\n     * @param Integer $start\n     * @param Integer $end\n     * @return Boolean\n     */\n    function book($start, $end) {\n\n    }\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * $obj = MyCalendarTwo();\n * $ret_1 = $obj->book($start, $end);\n */",
                    "__typename": "CodeSnippetNode"
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                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class MyCalendarTwo {\n    constructor() {\n\n    }\n\n    book(start: number, end: number): boolean {\n\n    }\n}\n\n/**\n * Your MyCalendarTwo object will be instantiated and called as such:\n * var obj = new MyCalendarTwo()\n * var param_1 = obj.book(start,end)\n */",
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                {
                    "lang": "Racket",
                    "langSlug": "racket",
                    "code": "(define my-calendar-two%\n  (class object%\n    (super-new)\n    (init-field)\n    \n    ; book : exact-integer? exact-integer? -> boolean?\n    (define/public (book start end)\n\n      )))\n\n;; Your my-calendar-two% object will be instantiated and called as such:\n;; (define obj (new my-calendar-two%))\n;; (define param_1 (send obj book start end))",
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                    "lang": "Erlang",
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                    "code": "-spec my_calendar_two_init_() -> any().\nmy_calendar_two_init_() ->\n  .\n\n-spec my_calendar_two_book(Start :: integer(), End :: integer()) -> boolean().\nmy_calendar_two_book(Start, End) ->\n  .\n\n\n%% Your functions will be called as such:\n%% my_calendar_two_init_(),\n%% Param_1 = my_calendar_two_book(Start, End),\n\n%% my_calendar_two_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 MyCalendarTwo do\n  @spec init_() :: any\n  def init_() do\n\n  end\n\n  @spec book(start :: integer, end :: integer) :: boolean\n  def book(start, end) do\n\n  end\nend\n\n# Your functions will be called as such:\n# MyCalendarTwo.init_()\n# param_1 = MyCalendarTwo.book(start, end)\n\n# MyCalendarTwo.init_ will be called before every test case, in which you can do some necessary initializations.",
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            "hints": [
                "Store two sorted lists of intervals: one list will be all times that are at least single booked, and another list will be all times that are definitely double booked.  If none of the double bookings conflict, then the booking will succeed, and you should update your single and double bookings accordingly."
            ],
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            "sampleTestCase": "[\"MyCalendarTwo\",\"book\",\"book\",\"book\",\"book\",\"book\",\"book\"]\n[[],[10,20],[50,60],[10,40],[5,15],[5,10],[25,55]]",
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