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leetcode-problemset/leetcode-cn/originData/drop-missing-data.json

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{
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"question": {
"questionId": "3075",
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"title": "Drop Missing Data",
"titleSlug": "drop-missing-data",
"content": "<pre>\nDataFrame students\n+-------------+--------+\n| Column Name | Type |\n+-------------+--------+\n| student_id | int |\n| name | object |\n| age | int |\n+-------------+--------+\n</pre>\n\n<p>There are some rows having missing values in the <code>name</code> column.</p>\n\n<p>Write a solution to remove the rows with missing values.</p>\n\n<p>The result format is in the following example.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:\n</strong>+------------+---------+-----+\n| student_id | name | age |\n+------------+---------+-----+\n| 32 | Piper | 5 |\n| 217 | None | 19 |\n| 779 | Georgia | 20 |\n| 849 | Willow | 14 |\n+------------+---------+-----+\n<strong>Output:\n</strong>+------------+---------+-----+\n| student_id | name | age |\n+------------+---------+-----+\n| 32 | Piper | 5 |\n| 779 | Georgia | 20 | \n| 849 | Willow | 14 | \n+------------+---------+-----+\n<strong>Explanation:</strong> \nStudent with id 217 havs empty value in the name column, so it will be removed.</pre>\n",
"translatedTitle": "删去丢失的数据",
"translatedContent": "<pre>\nDataFrame students\n+-------------+--------+\n| Column Name | Type |\n+-------------+--------+\n| student_id | int |\n| name | object |\n| age | int |\n+-------------+--------+\n</pre>\n\n<p>在 <code>name</code> 列里有一些具有缺失值的行。</p>\n\n<p>编写一个解决方案,删除具有缺失值的行。</p>\n\n<p>返回结果格式如下示例所示。</p>\n\n<p>&nbsp;</p>\n\n<p><b>示例 1:</b></p>\n\n<pre>\n<strong>输入:\n</strong>+------------+---------+-----+\n| student_id | name | age |\n+------------+---------+-----+\n| 32 | Piper | 5 |\n| 217 | None | 19 |\n| 779 | Georgia | 20 |\n| 849 | Willow | 14 |\n+------------+---------+-----+\n<strong>输出:\n</strong>+------------+---------+-----+\n| student_id | name | age |\n+------------+---------+-----+\n| 32 | Piper | 5 |\n| 779 | Georgia | 20 | \n| 849 | Willow | 14 | \n+------------+---------+-----+\n<b>解释:\n</b>学号为 217 的学生所在行在 name 列中有空值,因此这一行将被删除。</pre>\n",
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"code": "import pandas as pd\n\ndef dropMissingData(students: pd.DataFrame) -> pd.DataFrame:\n ",
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"hints": [
"Consider using a build-in function in pandas library to remove the rows with missing values based on specified data."
],
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"sampleTestCase": "{\"headers\":{\"students\":[\"student_id\",\"name\",\"age\"]},\"rows\":{\"students\":[[32,\"Piper\",5],[217,null,19],[779,\"Georgia\",20],[849,\"Willow\",14]]}}",
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