leetcode-problemset/leetcode/originData/first-bad-version.json

{
    "data": {
        "question": {
            "questionId": "278",
            "questionFrontendId": "278",
            "boundTopicId": null,
            "title": "First Bad Version",
            "titleSlug": "first-bad-version",
            "content": "<p>You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality check. Since each version is developed based on the previous version, all the versions after a bad version are also bad.</p>\n\n<p>Suppose you have <code>n</code> versions <code>[1, 2, ..., n]</code> and you want to find out the first bad one, which causes all the following ones to be bad.</p>\n\n<p>You are given an API <code>bool isBadVersion(version)</code> which returns whether <code>version</code> is bad. Implement a function to find the first bad version. You should minimize the number of calls to the API.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = 5, bad = 4\n<strong>Output:</strong> 4\n<strong>Explanation:</strong>\ncall isBadVersion(3) -&gt; false\ncall isBadVersion(5)&nbsp;-&gt; true\ncall isBadVersion(4)&nbsp;-&gt; true\nThen 4 is the first bad version.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = 1, bad = 1\n<strong>Output:</strong> 1\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= bad &lt;= n &lt;= 2<sup>31</sup> - 1</code></li>\n</ul>\n",
            "translatedTitle": null,
            "translatedContent": null,
            "isPaidOnly": false,
            "difficulty": "Easy",
            "likes": 4709,
            "dislikes": 1764,
            "isLiked": null,
            "similarQuestions": "[{\"title\": \"Find First and Last Position of Element in Sorted Array\", \"titleSlug\": \"find-first-and-last-position-of-element-in-sorted-array\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Search Insert Position\", \"titleSlug\": \"search-insert-position\", \"difficulty\": \"Easy\", \"translatedTitle\": null}, {\"title\": \"Guess Number Higher or Lower\", \"titleSlug\": \"guess-number-higher-or-lower\", \"difficulty\": \"Easy\", \"translatedTitle\": null}]",
            "exampleTestcases": "5\n4\n1\n1",
            "categoryTitle": "Algorithms",
            "contributors": [],
            "topicTags": [
                {
                    "name": "Binary Search",
                    "slug": "binary-search",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Interactive",
                    "slug": "interactive",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": [
                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "// The API isBadVersion is defined for you.\n// bool isBadVersion(int version);\n\nclass Solution {\npublic:\n    int firstBadVersion(int n) {\n        \n    }\n};",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Java",
                    "langSlug": "java",
                    "code": "/* The isBadVersion API is defined in the parent class VersionControl.\n      boolean isBadVersion(int version); */\n\npublic class Solution extends VersionControl {\n    public int firstBadVersion(int n) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python",
                    "langSlug": "python",
                    "code": "# The isBadVersion API is already defined for you.\n# @param version, an integer\n# @return a bool\n# def isBadVersion(version):\n\nclass Solution(object):\n    def firstBadVersion(self, n):\n        \"\"\"\n        :type n: int\n        :rtype: int\n        \"\"\"\n        ",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "# The isBadVersion API is already defined for you.\n# def isBadVersion(version: int) -> bool:\n\nclass Solution:\n    def firstBadVersion(self, n: int) -> int:\n        ",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "// The API isBadVersion is defined for you.\n// bool isBadVersion(int version);\n\nint firstBadVersion(int n) {\n    \n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "/* The isBadVersion API is defined in the parent class VersionControl.\n      bool IsBadVersion(int version); */\n\npublic class Solution : VersionControl {\n    public int FirstBadVersion(int n) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "/**\n * Definition for isBadVersion()\n * \n * @param {integer} version number\n * @return {boolean} whether the version is bad\n * isBadVersion = function(version) {\n *     ...\n * };\n */\n\n/**\n * @param {function} isBadVersion()\n * @return {function}\n */\nvar solution = function(isBadVersion) {\n    /**\n     * @param {integer} n Total versions\n     * @return {integer} The first bad version\n     */\n    return function(n) {\n        \n    };\n};",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "# The is_bad_version API is already defined for you.\n# @param {Integer} version\n# @return {boolean} whether the version is bad\n# def is_bad_version(version):\n\n# @param {Integer} n\n# @return {Integer}\ndef first_bad_version(n)\n    \nend",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "/**\n * The knows API is defined in the parent class VersionControl.\n *     func isBadVersion(_ version: Int) -> Bool{}\n */\n\nclass Solution : VersionControl {\n    func firstBadVersion(_ n: Int) -> Int {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "/** \n * Forward declaration of isBadVersion API.\n * @param   version   your guess about first bad version\n * @return \t \t      true if current version is bad \n *\t\t\t          false if current version is good\n * func isBadVersion(version int) bool;\n */\n\nfunc firstBadVersion(n int) int {\n    \n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "/* The isBadVersion API is defined in the parent class VersionControl.\n      def isBadVersion(version: Int): Boolean = {} */\n\nclass Solution extends VersionControl {\n    def firstBadVersion(n: Int): Int = {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "/* The isBadVersion API is defined in the parent class VersionControl.\n      fun isBadVersion(version: Int) : Boolean {} */\n\nclass Solution: VersionControl() {\n    override fun firstBadVersion(n: Int) : Int {\n        \n\t}\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "// The API isBadVersion is defined for you.\n// isBadVersion(version:i32)-> bool;\n// to call it use self.isBadVersion(version)\n\nimpl Solution {\n    pub fn first_bad_version(&self, n: i32) -> i32 {\n\t\t\n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "/* The isBadVersion API is defined in the parent class VersionControl.\n      public function isBadVersion($version){} */\n\nclass Solution extends VersionControl {\n    /**\n     * @param Integer $n\n     * @return Integer\n     */\n    function firstBadVersion($n) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "/**\n * The knows API is defined in the parent class Relation.\n * isBadVersion(version: number): boolean {\n *     ...\n * };\n */\n\nvar solution = function(isBadVersion: any) {\n\n    return function(n: number): number {\n        \n    };\n};",
                    "__typename": "CodeSnippetNode"
                }
            ],
            "stats": "{\"totalAccepted\": \"967.1K\", \"totalSubmission\": \"2.3M\", \"totalAcceptedRaw\": 967057, \"totalSubmissionRaw\": 2325689, \"acRate\": \"41.6%\"}",
            "hints": [],
            "solution": {
                "id": "8",
                "canSeeDetail": true,
                "paidOnly": false,
                "hasVideoSolution": true,
                "paidOnlyVideo": true,
                "__typename": "ArticleNode"
            },
            "status": null,
            "sampleTestCase": "5\n4",
            "metaData": "{\n  \"name\": \"firstBadVersion\",\n  \"params\": [\n    {\n      \"name\": \"n\",\n      \"type\": \"integer\"\n    },\n    {\n      \"name\": \"bad\",\n      \"type\": \"integer\"\n    }\n  ],\n  \"return\": {\n    \"type\": \"integer\"\n  },\n  \"manual\": true\n}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [],
            "enableRunCode": true,
            "enableTestMode": false,
            "enableDebugger": true,
            "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>\"]}",
            "libraryUrl": null,
            "adminUrl": null,
            "challengeQuestion": null,
            "__typename": "QuestionNode"
        }
    }
}