mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
91 lines
7.8 KiB
JSON
91 lines
7.8 KiB
JSON
{
|
||
"data": {
|
||
"question": {
|
||
"questionId": "1877",
|
||
"questionFrontendId": "1729",
|
||
"categoryTitle": "Database",
|
||
"boundTopicId": 564380,
|
||
"title": "Find Followers Count",
|
||
"titleSlug": "find-followers-count",
|
||
"content": "<p>Table: <code>Followers</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| user_id | int |\n| follower_id | int |\n+-------------+------+\n(user_id, follower_id) is the primary key (combination of columns with unique values) for this table.\nThis table contains the IDs of a user and a follower in a social media app where the follower follows the user.</pre>\n\n<p> </p>\n\n<p>Write a solution that will, for each user, return the number of followers.</p>\n\n<p>Return the result table ordered by <code>user_id</code> in ascending order.</p>\n\n<p>The result format is in the following example.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nFollowers table:\n+---------+-------------+\n| user_id | follower_id |\n+---------+-------------+\n| 0 | 1 |\n| 1 | 0 |\n| 2 | 0 |\n| 2 | 1 |\n+---------+-------------+\n<strong>Output:</strong> \n+---------+----------------+\n| user_id | followers_count|\n+---------+----------------+\n| 0 | 1 |\n| 1 | 1 |\n| 2 | 2 |\n+---------+----------------+\n<strong>Explanation:</strong> \nThe followers of 0 are {1}\nThe followers of 1 are {0}\nThe followers of 2 are {0,1}\n</pre>\n",
|
||
"translatedTitle": "求关注者的数量",
|
||
"translatedContent": "<p>表: <code>Followers</code></p>\n\n<pre>\n+-------------+------+\n| Column Name | Type |\n+-------------+------+\n| user_id | int |\n| follower_id | int |\n+-------------+------+\n(user_id, follower_id) 是这个表的主键(具有唯一值的列的组合)。\n该表包含一个关注关系中关注者和用户的编号,其中关注者关注用户。</pre>\n\n<p> </p>\n\n<p>编写解决方案,对于每一个用户,返回该用户的关注者数量。</p>\n\n<p>按 <code>user_id</code> 的顺序返回结果表。</p>\n\n<p>查询结果的格式如下示例所示。</p>\n\n<p> </p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong>\nFollowers 表:\n+---------+-------------+\n| user_id | follower_id |\n+---------+-------------+\n| 0 | 1 |\n| 1 | 0 |\n| 2 | 0 |\n| 2 | 1 |\n+---------+-------------+\n<strong>输出:</strong>\n+---------+----------------+\n| user_id | followers_count|\n+---------+----------------+\n| 0 | 1 |\n| 1 | 1 |\n| 2 | 2 |\n+---------+----------------+\n<strong>解释:</strong>\n0 的关注者有 {1}\n1 的关注者有 {0}\n2 的关注者有 {0,1}</pre>\n",
|
||
"isPaidOnly": false,
|
||
"difficulty": "Easy",
|
||
"likes": 48,
|
||
"dislikes": 0,
|
||
"isLiked": null,
|
||
"similarQuestions": "[]",
|
||
"contributors": [],
|
||
"langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python\": false, \"python3\": false, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"typescript\": false, \"bash\": false, \"php\": false, \"swift\": false, \"kotlin\": false, \"dart\": false, \"golang\": false, \"ruby\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"rust\": false, \"racket\": false, \"erlang\": false, \"elixir\": false, \"pythondata\": false, \"react\": false, \"vanillajs\": false, \"postgresql\": false}",
|
||
"topicTags": [
|
||
{
|
||
"name": "Database",
|
||
"slug": "database",
|
||
"translatedName": "数据库",
|
||
"__typename": "TopicTagNode"
|
||
}
|
||
],
|
||
"companyTagStats": null,
|
||
"codeSnippets": [
|
||
{
|
||
"lang": "MySQL",
|
||
"langSlug": "mysql",
|
||
"code": "# Write your MySQL query statement below",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "MS SQL Server",
|
||
"langSlug": "mssql",
|
||
"code": "/* Write your T-SQL query statement below */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Oracle",
|
||
"langSlug": "oraclesql",
|
||
"code": "/* Write your PL/SQL query statement below */",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "Pandas",
|
||
"langSlug": "pythondata",
|
||
"code": "import pandas as pd\n\ndef count_followers(followers: pd.DataFrame) -> pd.DataFrame:\n ",
|
||
"__typename": "CodeSnippetNode"
|
||
},
|
||
{
|
||
"lang": "PostgreSQL",
|
||
"langSlug": "postgresql",
|
||
"code": "-- Write your PostgreSQL query statement below",
|
||
"__typename": "CodeSnippetNode"
|
||
}
|
||
],
|
||
"stats": "{\"totalAccepted\": \"40.1K\", \"totalSubmission\": \"66.5K\", \"totalAcceptedRaw\": 40146, \"totalSubmissionRaw\": 66521, \"acRate\": \"60.4%\"}",
|
||
"hints": [],
|
||
"solution": null,
|
||
"status": null,
|
||
"sampleTestCase": "{\"headers\":{\"Followers\":[\"user_id\",\"follower_id\"]},\"rows\":{\"Followers\":[[\"0\",\"1\"],[\"1\",\"0\"],[\"2\",\"0\"],[\"2\",\"1\"]]}}",
|
||
"metaData": "{\"mysql\":[\"Create table If Not Exists Followers(user_id int, follower_id int)\"],\"mssql\":[\"Create table Followers(user_id int, follower_id int)\"],\"oraclesql\":[\"Create table Followers(user_id int, follower_id int)\"],\"database\":true,\"name\":\"count_followers\",\"pythondata\":[\"Followers = pd.DataFrame([], columns=['user_id', 'follower_id']).astype({'user_id':'Int64', 'follower_id':'Int64'})\"],\"postgresql\":[\"\\nCreate table If Not Exists Followers(user_id int, follower_id int)\"],\"database_schema\":{\"Followers\":{\"user_id\":\"INT\",\"follower_id\":\"INT\"}}}",
|
||
"judgerAvailable": true,
|
||
"judgeType": "large",
|
||
"mysqlSchemas": [
|
||
"Create table If Not Exists Followers(user_id int, follower_id int)",
|
||
"Truncate table Followers",
|
||
"insert into Followers (user_id, follower_id) values ('0', '1')",
|
||
"insert into Followers (user_id, follower_id) values ('1', '0')",
|
||
"insert into Followers (user_id, follower_id) values ('2', '0')",
|
||
"insert into Followers (user_id, follower_id) values ('2', '1')"
|
||
],
|
||
"enableRunCode": true,
|
||
"envInfo": "{\"mysql\":[\"MySQL\",\"<p>\\u7248\\u672c\\uff1a<code>MySQL 8.0<\\/code><\\/p>\"],\"mssql\":[\"MS SQL Server\",\"<p>mssql server 2019.<\\/p>\"],\"oraclesql\":[\"Oracle\",\"<p>Oracle Sql 11.2.<\\/p>\"],\"pythondata\":[\"Pandas\",\"<p>Python 3.10 with Pandas 2.0.2 and NumPy 1.25.0<\\/p>\"],\"postgresql\":[\"PostgreSQL\",\"<p>PostgreSQL 16<\\/p>\"]}",
|
||
"book": null,
|
||
"isSubscribed": false,
|
||
"isDailyQuestion": false,
|
||
"dailyRecordStatus": null,
|
||
"editorType": "CKEDITOR",
|
||
"ugcQuestionId": null,
|
||
"style": "LEETCODE",
|
||
"exampleTestcases": "{\"headers\":{\"Followers\":[\"user_id\",\"follower_id\"]},\"rows\":{\"Followers\":[[\"0\",\"1\"],[\"1\",\"0\"],[\"2\",\"0\"],[\"2\",\"1\"]]}}",
|
||
"__typename": "QuestionNode"
|
||
}
|
||
}
|
||
} |