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存量题库数据更新

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小墨
2023-12-09 18:42:21 +08:00
parent a788808cd7
commit c198538f10
10843 changed files with 288489 additions and 248355 deletions
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31
leetcode/problem/drop-missing-data.html
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@@ -20,20 +20,21 @@ DataFrame students
<pre>
<strong>Input:
</strong>+------------+-------+-----+
| student_id | name | age |
+------------+-------+-----+
| 32 | Piper | 5 |
| 217 | Grace | 19 |
| 779 | None | 20 |
| 849 | None | 14 |
+------------+-------+-----+
</strong>+------------+---------+-----+
| student_id | name | age |
+------------+---------+-----+
| 32 | Piper | 5 |
| 217 | None | 19 |
| 779 | Georgia | 20 |
| 849 | Willow | 14 |
+------------+---------+-----+
<strong>Output:
</strong>+------------+-------+-----+
| student_id | name | age |
+------------+-------+-----+
| 32 | Piper | 5 |
| 217 | Grace | 19 |
+------------+-------+-----+
</strong>+------------+---------+-----+
| student_id | name | age |
+------------+---------+-----+
| 32 | Piper | 5 |
| 779 | Georgia | 20 |
| 849 | Willow | 14 |
+------------+---------+-----+
<strong>Explanation:</strong>
Students with ids 779 and 849 have empty values in the name column, so they will be removed.</pre>
Student with id 217 havs empty value in the name column, so it will be removed.</pre>