mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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188 lines
28 KiB
JSON
188 lines
28 KiB
JSON
{
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"data": {
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"question": {
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"questionId": "729",
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"questionFrontendId": "729",
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"categoryTitle": "Algorithms",
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"boundTopicId": 1828,
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"title": "My Calendar I",
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"titleSlug": "my-calendar-i",
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"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>double booking</strong>.</p>\n\n<p>A <strong>double booking</strong> happens when two events have some non-empty intersection (i.e., some moment is common to both 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 <= x < end</code>.</p>\n\n<p>Implement the <code>MyCalendar</code> class:</p>\n\n<ul>\n\t<li><code>MyCalendar()</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>double booking</strong>. Otherwise, return <code>false</code> and do not add the event to the calendar.</li>\n</ul>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n["MyCalendar", "book", "book", "book"]\n[[], [10, 20], [15, 25], [20, 30]]\n<strong>Output</strong>\n[null, true, false, true]\n\n<strong>Explanation</strong>\nMyCalendar myCalendar = new MyCalendar();\nmyCalendar.book(10, 20); // return True\nmyCalendar.book(15, 25); // return False, It can not be booked because time 15 is already booked by another event.\nmyCalendar.book(20, 30); // return True, The event can be booked, as the first event takes every time less than 20, but not including 20.</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 <= start < end <= 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",
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"translatedTitle": "我的日程安排表 I",
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"translatedContent": "<p>实现一个 <code>MyCalendar</code> 类来存放你的日程安排。如果要添加的日程安排不会造成 <strong>重复预订</strong> ，则可以存储这个新的日程安排。</p>\n\n<p>当两个日程安排有一些时间上的交叉时（例如两个日程安排都在同一时间内），就会产生 <strong>重复预订</strong> 。</p>\n\n<p>日程可以用一对整数 <code>start</code> 和 <code>end</code> 表示，这里的时间是半开区间，即 <code>[start, end)</code>, 实数 <code>x</code> 的范围为， <code>start <= x < end</code> 。</p>\n\n<p>实现 <code>MyCalendar</code> 类：</p>\n\n<ul>\n\t<li><code>MyCalendar()</code> 初始化日历对象。</li>\n\t<li><code>boolean book(int start, int end)</code> 如果可以将日程安排成功添加到日历中而不会导致重复预订，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。</li>\n</ul>\n\n<p> </p>\n\n<p><strong>示例：</strong></p>\n\n<pre>\n<strong>输入：</strong>\n[\"MyCalendar\", \"book\", \"book\", \"book\"]\n[[], [10, 20], [15, 25], [20, 30]]\n<strong>输出：</strong>\n[null, true, false, true]\n\n<strong>解释：</strong>\nMyCalendar myCalendar = new MyCalendar();\nmyCalendar.book(10, 20); // return True\nmyCalendar.book(15, 25); // return False ，这个日程安排不能添加到日历中，因为时间 15 已经被另一个日程安排预订了。\nmyCalendar.book(20, 30); // return True ，这个日程安排可以添加到日历中，因为第一个日程安排预订的每个时间都小于 20 ，且不包含时间 20 。</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>0 <= start < end <= 10<sup>9</sup></code></li>\n\t<li>每个测试用例，调用 <code>book</code> 方法的次数最多不超过 <code>1000</code> 次。</li>\n</ul>\n",
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"difficulty": "Medium",
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"likes": 271,
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"contributors": [],
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"translatedName": "设计",
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"name": "Segment Tree",
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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 MyCalendar {\npublic:\n MyCalendar() {\n\n }\n \n bool book(int start, int end) {\n\n }\n};\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * MyCalendar* obj = new MyCalendar();\n * bool param_1 = obj->book(start,end);\n */",
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"__typename": "CodeSnippetNode"
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"lang": "Java",
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"langSlug": "java",
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"code": "class MyCalendar {\n\n public MyCalendar() {\n\n }\n \n public boolean book(int start, int end) {\n\n }\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * MyCalendar obj = new MyCalendar();\n * boolean param_1 = obj.book(start,end);\n */",
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"__typename": "CodeSnippetNode"
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"lang": "Python",
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"langSlug": "python",
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"code": "class MyCalendar(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 MyCalendar object will be instantiated and called as such:\n# obj = MyCalendar()\n# param_1 = obj.book(start,end)",
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"__typename": "CodeSnippetNode"
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"lang": "Python3",
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"langSlug": "python3",
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"code": "class MyCalendar:\n\n def __init__(self):\n\n\n def book(self, start: int, end: int) -> bool:\n\n\n\n# Your MyCalendar object will be instantiated and called as such:\n# obj = MyCalendar()\n# param_1 = obj.book(start,end)",
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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} MyCalendar;\n\n\nMyCalendar* myCalendarCreate() {\n \n}\n\nbool myCalendarBook(MyCalendar* obj, int start, int end) {\n \n}\n\nvoid myCalendarFree(MyCalendar* obj) {\n \n}\n\n/**\n * Your MyCalendar struct will be instantiated and called as such:\n * MyCalendar* obj = myCalendarCreate();\n * bool param_1 = myCalendarBook(obj, start, end);\n \n * myCalendarFree(obj);\n*/",
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"lang": "C#",
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"langSlug": "csharp",
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"code": "public class MyCalendar {\n\n public MyCalendar() {\n\n }\n \n public bool Book(int start, int end) {\n\n }\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * MyCalendar obj = new MyCalendar();\n * bool param_1 = obj.Book(start,end);\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": "\nvar MyCalendar = function() {\n\n};\n\n/** \n * @param {number} start \n * @param {number} end\n * @return {boolean}\n */\nMyCalendar.prototype.book = function(start, end) {\n\n};\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * var obj = new MyCalendar()\n * var param_1 = obj.book(start,end)\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 MyCalendar {\n constructor() {\n \n }\n\n book(start: number, end: number): boolean {\n \n }\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * var obj = new MyCalendar()\n * var param_1 = obj.book(start,end)\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 MyCalendar {\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 MyCalendar object will be instantiated and called as such:\n * $obj = MyCalendar();\n * $ret_1 = $obj->book($start, $end);\n */",
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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 MyCalendar {\n\n init() {\n\n }\n \n func book(_ start: Int, _ end: Int) -> Bool {\n\n }\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * let obj = MyCalendar()\n * let ret_1: Bool = obj.book(start, end)\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 MyCalendar() {\n\n fun book(start: Int, end: Int): Boolean {\n\n }\n\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * var obj = MyCalendar()\n * var param_1 = obj.book(start,end)\n */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Dart",
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"langSlug": "dart",
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"code": "class MyCalendar {\n\n MyCalendar() {\n \n }\n \n bool book(int start, int end) {\n \n }\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * MyCalendar obj = MyCalendar();\n * bool param1 = obj.book(start,end);\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 MyCalendar struct {\n\n}\n\n\nfunc Constructor() MyCalendar {\n\n}\n\n\nfunc (this *MyCalendar) Book(start int, end int) bool {\n\n}\n\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * obj := Constructor();\n * param_1 := obj.Book(start,end);\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 MyCalendar\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 MyCalendar object will be instantiated and called as such:\n# obj = MyCalendar.new()\n# param_1 = obj.book(start, end)",
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"__typename": "CodeSnippetNode"
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"lang": "Scala",
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"langSlug": "scala",
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"code": "class MyCalendar() {\n\n def book(start: Int, end: Int): Boolean = {\n\n }\n\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * var obj = new MyCalendar()\n * var param_1 = obj.book(start,end)\n */",
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"lang": "Rust",
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"langSlug": "rust",
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"code": "struct MyCalendar {\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 MyCalendar {\n\n fn new() -> Self {\n\n }\n \n fn book(&self, start: i32, end: i32) -> bool {\n\n }\n}\n\n/**\n * Your MyCalendar object will be instantiated and called as such:\n * let obj = MyCalendar::new();\n * let ret_1: bool = obj.book(start, end);\n */",
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"lang": "Racket",
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"langSlug": "racket",
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"code": "(define my-calendar%\n (class object%\n (super-new)\n \n (init-field)\n \n ; book : exact-integer? exact-integer? -> boolean?\n (define/public (book start end)\n )))\n\n;; Your my-calendar% object will be instantiated and called as such:\n;; (define obj (new my-calendar%))\n;; (define param_1 (send obj book start end))",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec my_calendar_init_() -> any().\nmy_calendar_init_() ->\n .\n\n-spec my_calendar_book(Start :: integer(), End :: integer()) -> boolean().\nmy_calendar_book(Start, End) ->\n .\n\n\n%% Your functions will be called as such:\n%% my_calendar_init_(),\n%% Param_1 = my_calendar_book(Start, End),\n\n%% my_calendar_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 MyCalendar 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# MyCalendar.init_()\n# param_1 = MyCalendar.book(start, end)\n\n# MyCalendar.init_ will be called before every test case, in which you can do some necessary initializations.",
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"Store the events as a sorted list of intervals. If none of the events conflict, then the new event can be added."
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],
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"sampleTestCase": "[\"MyCalendar\",\"book\",\"book\",\"book\"]\n[[],[10,20],[15,25],[20,30]]",
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