mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
55 lines
1.5 KiB
HTML
55 lines
1.5 KiB
HTML
<pre>
|
||
DataFrame <code>animals</code>
|
||
+-------------+--------+
|
||
| Column Name | Type |
|
||
+-------------+--------+
|
||
| name | object |
|
||
| species | object |
|
||
| age | int |
|
||
| weight | int |
|
||
+-------------+--------+
|
||
</pre>
|
||
|
||
<p>编写一个解决方案来列出体重 <strong>严格超过 </strong> <code>100</code> 千克的动物的名称。</p>
|
||
|
||
<p>按体重 <strong>降序</strong> 返回动物。</p>
|
||
|
||
<p>返回结果格式如下示例所示。</p>
|
||
|
||
<p> </p>
|
||
|
||
<p><b>示例 1:</b></p>
|
||
|
||
<pre>
|
||
<b>输入：</b>
|
||
DataFrame animals:
|
||
+----------+---------+-----+--------+
|
||
| name | species | age | weight |
|
||
+----------+---------+-----+--------+
|
||
| Tatiana | Snake | 98 | 464 |
|
||
| Khaled | Giraffe | 50 | 41 |
|
||
| Alex | Leopard | 6 | 328 |
|
||
| Jonathan | Monkey | 45 | 463 |
|
||
| Stefan | Bear | 100 | 50 |
|
||
| Tommy | Panda | 26 | 349 |
|
||
+----------+---------+-----+--------+
|
||
<b>输出：</b>
|
||
+----------+
|
||
| name |
|
||
+----------+
|
||
| Tatiana |
|
||
| Jonathan |
|
||
| Tommy |
|
||
| Alex |
|
||
+----------+
|
||
<b>解释：</b>
|
||
所有体重超过 100 的动物都应包含在结果表中。
|
||
Tatiana 的体重为 464，Jonathan 的体重为 463，Tommy 的体重为 349，Alex 的体重为 328。
|
||
结果应按体重降序排序。</pre>
|
||
|
||
<p> </p>
|
||
|
||
<p>在 Pandas 中，<strong>方法链</strong> 允许我们在 DataFrame 上执行操作，而无需将每个操作拆分成单独的行或创建多个临时变量。</p>
|
||
|
||
<p>你能用 <strong>一行</strong> 代码的方法链完成这个任务吗？</p>
|