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https://gitee.com/coder-xiaomo/leetcode-problemset
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@@ -9,15 +9,15 @@
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"titleSlug": "find-users-with-valid-e-mails",
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"content": "<p>Table: <code>Users</code></p>\n\n<pre>\n+---------------+---------+\n| Column Name | Type |\n+---------------+---------+\n| user_id | int |\n| name | varchar |\n| mail | varchar |\n+---------------+---------+\nuser_id is the primary key (column with unique values) for this table.\nThis table contains information of the users signed up in a website. Some e-mails are invalid.\n</pre>\n\n<p> </p>\n\n<p>Write a solution to find the users who have <strong>valid emails</strong>.</p>\n\n<p>A valid e-mail has a prefix name and a domain where:</p>\n\n<ul>\n\t<li><strong>The prefix name</strong> is a string that may contain letters (upper or lower case), digits, underscore <code>'_'</code>, period <code>'.'</code>, and/or dash <code>'-'</code>. The prefix name <strong>must</strong> start with a letter.</li>\n\t<li><strong>The domain</strong> is <code>'@leetcode.com'</code>.</li>\n</ul>\n\n<p>Return the result table in <strong>any order</strong>.</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> \nUsers table:\n+---------+-----------+-------------------------+\n| user_id | name | mail |\n+---------+-----------+-------------------------+\n| 1 | Winston | winston@leetcode.com |\n| 2 | Jonathan | jonathanisgreat |\n| 3 | Annabelle | bella-@leetcode.com |\n| 4 | Sally | sally.come@leetcode.com |\n| 5 | Marwan | quarz#2020@leetcode.com |\n| 6 | David | david69@gmail.com |\n| 7 | Shapiro | .shapo@leetcode.com |\n+---------+-----------+-------------------------+\n<strong>Output:</strong> \n+---------+-----------+-------------------------+\n| user_id | name | mail |\n+---------+-----------+-------------------------+\n| 1 | Winston | winston@leetcode.com |\n| 3 | Annabelle | bella-@leetcode.com |\n| 4 | Sally | sally.come@leetcode.com |\n+---------+-----------+-------------------------+\n<strong>Explanation:</strong> \nThe mail of user 2 does not have a domain.\nThe mail of user 5 has the # sign which is not allowed.\nThe mail of user 6 does not have the leetcode domain.\nThe mail of user 7 starts with a period.\n</pre>\n",
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"translatedTitle": "查找拥有有效邮箱的用户",
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"translatedContent": "<p>表: <code>Users</code></p>\n\n<pre>\n+---------------+---------+\n| Column Name | Type |\n+---------------+---------+\n| user_id | int |\n| name | varchar |\n| mail | varchar |\n+---------------+---------+\nuser_id 是该表的主键（具有唯一值的列）。\n该表包含了网站已注册用户的信息。有一些电子邮件是无效的。\n</pre>\n\n<p> </p>\n\n<p>编写一个解决方案，以查找具有有效电子邮件的用户。</p>\n\n<p>一个有效的电子邮件具有前缀名称和域，其中：</p>\n\n<ol>\n\t<li> <strong>前缀</strong> 名称是一个字符串，可以包含字母（大写或小写），数字，下划线 <code>'_'</code> ，点 <code>'.'</code> 和/或破折号 <code>'-'</code> 。前缀名称 <strong>必须</strong> 以字母开头。</li>\n\t<li><strong>域</strong> 为 <code>'@leetcode.com'</code> 。</li>\n</ol>\n\n<p>以任何顺序返回结果表。</p>\n\n<p>结果的格式如以下示例所示：</p>\n\n<p> </p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n\n<pre>\n<b>输入：</b>\nUsers 表:\n+---------+-----------+-------------------------+\n| user_id | name | mail |\n+---------+-----------+-------------------------+\n| 1 | Winston | winston@leetcode.com |\n| 2 | Jonathan | jonathanisgreat |\n| 3 | Annabelle | bella-@leetcode.com |\n| 4 | Sally | sally.come@leetcode.com |\n| 5 | Marwan | quarz#2020@leetcode.com |\n| 6 | David | david69@gmail.com |\n| 7 | Shapiro | .shapo@leetcode.com |\n+---------+-----------+-------------------------+\n<b>输出：</b>\n+---------+-----------+-------------------------+\n| user_id | name | mail |\n+---------+-----------+-------------------------+\n| 1 | Winston | winston@leetcode.com |\n| 3 | Annabelle | bella-@leetcode.com |\n| 4 | Sally | sally.come@leetcode.com |\n+---------+-----------+-------------------------+\n<b>解释：</b>\n用户 2 的电子邮件没有域。 \n用户 5 的电子邮件带有不允许的 '#' 符号。\n用户 6 的电子邮件没有 leetcode 域。 \n用户 7 的电子邮件以点开头。\n</pre>\n",
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"translatedContent": "<p>表: <code>Users</code></p>\n\n<pre>\n+---------------+---------+\n| Column Name | Type |\n+---------------+---------+\n| user_id | int |\n| name | varchar |\n| mail | varchar |\n+---------------+---------+\nuser_id 是该表的主键（具有唯一值的列）。\n该表包含了网站已注册用户的信息。有一些电子邮件是无效的。\n</pre>\n\n<p> </p>\n\n<p>编写一个解决方案，以查找具有有效电子邮件的用户。</p>\n\n<p>一个有效的电子邮件具有前缀名称和域，其中：</p>\n\n<ol>\n\t<li> <strong>前缀</strong> 名称是一个字符串，可以包含字母（大写或小写），数字，下划线 <code>'_'</code> ，点 <code>'.'</code> 和（或）破折号 <code>'-'</code> 。前缀名称 <strong>必须</strong> 以字母开头。</li>\n\t<li><strong>域</strong> 为 <code>'@leetcode.com'</code> 。</li>\n</ol>\n\n<p>以任何顺序返回结果表。</p>\n\n<p>结果的格式如以下示例所示：</p>\n\n<p> </p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n\n<pre>\n<b>输入：</b>\nUsers 表:\n+---------+-----------+-------------------------+\n| user_id | name | mail |\n+---------+-----------+-------------------------+\n| 1 | Winston | winston@leetcode.com |\n| 2 | Jonathan | jonathanisgreat |\n| 3 | Annabelle | bella-@leetcode.com |\n| 4 | Sally | sally.come@leetcode.com |\n| 5 | Marwan | quarz#2020@leetcode.com |\n| 6 | David | david69@gmail.com |\n| 7 | Shapiro | .shapo@leetcode.com |\n+---------+-----------+-------------------------+\n<b>输出：</b>\n+---------+-----------+-------------------------+\n| user_id | name | mail |\n+---------+-----------+-------------------------+\n| 1 | Winston | winston@leetcode.com |\n| 3 | Annabelle | bella-@leetcode.com |\n| 4 | Sally | sally.come@leetcode.com |\n+---------+-----------+-------------------------+\n<b>解释：</b>\n用户 2 的电子邮件没有域。 \n用户 5 的电子邮件带有不允许的 '#' 符号。\n用户 6 的电子邮件没有 leetcode 域。 \n用户 7 的电子邮件以点开头。\n</pre>\n",
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"isPaidOnly": false,
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"difficulty": "Easy",
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"likes": 95,
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"likes": 111,
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"dislikes": 0,
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"isLiked": null,
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"similarQuestions": "[]",
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"contributors": [],
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"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, \"cangjie\": false}",
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"langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python3\": false, \"python\": false, \"javascript\": false, \"typescript\": false, \"csharp\": false, \"c\": false, \"golang\": false, \"kotlin\": false, \"swift\": false, \"rust\": false, \"ruby\": false, \"php\": false, \"dart\": false, \"scala\": false, \"elixir\": false, \"erlang\": false, \"racket\": false, \"cangjie\": false, \"bash\": false, \"html\": false, \"pythonml\": false, \"react\": false, \"vanillajs\": false, \"mysql\": false, \"mssql\": false, \"postgresql\": false, \"oraclesql\": false, \"pythondata\": false}",
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"topicTags": [
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{
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"name": "Database",
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@@ -40,6 +40,12 @@
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"code": "/* Write your T-SQL query statement below */",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "PostgreSQL",
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"langSlug": "postgresql",
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"code": "-- Write your PostgreSQL query statement below",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Oracle",
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"langSlug": "oraclesql",
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@@ -51,15 +57,9 @@
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"langSlug": "pythondata",
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"code": "import pandas as pd\n\ndef valid_emails(users: pd.DataFrame) -> pd.DataFrame:\n ",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "PostgreSQL",
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"langSlug": "postgresql",
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"code": "-- Write your PostgreSQL query statement below",
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"__typename": "CodeSnippetNode"
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}
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],
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"stats": "{\"totalAccepted\": \"36.6K\", \"totalSubmission\": \"68.7K\", \"totalAcceptedRaw\": 36634, \"totalSubmissionRaw\": 68719, \"acRate\": \"53.3%\"}",
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"stats": "{\"totalAccepted\": \"48.5K\", \"totalSubmission\": \"99K\", \"totalAcceptedRaw\": 48464, \"totalSubmissionRaw\": 99009, \"acRate\": \"48.9%\"}",
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"hints": [],
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"solution": null,
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"status": null,
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