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42 lines
1.4 KiB
HTML
42 lines
1.4 KiB
HTML
<pre>
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DataFrame: <code>employees</code>
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+-------------+--------+
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| Column Name | Type |
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+-------------+--------+
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| employee_id | int |
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| name | object |
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| department | object |
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| salary | int |
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+-------------+--------+
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</pre>
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<p>编写一个解决方案，显示这个 DataFrame 的<strong> 前 <code>3</code> </strong>行。</p>
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<p> </p>
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<p><b>示例 1:</b></p>
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<pre>
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<strong>输入：
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</strong>DataFrame employees
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+-------------+-----------+-----------------------+--------+
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| employee_id | name | department | salary |
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+-------------+-----------+-----------------------+--------+
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| 3 | Bob | Operations | 48675 |
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| 90 | Alice | Sales | 11096 |
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| 9 | Tatiana | Engineering | 33805 |
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| 60 | Annabelle | InformationTechnology | 37678 |
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| 49 | Jonathan | HumanResources | 23793 |
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| 43 | Khaled | Administration | 40454 |
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+-------------+-----------+-----------------------+--------+
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<b>输出：</b>
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+-------------+---------+-------------+--------+
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| employee_id | name | department | salary |
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+-------------+---------+-------------+--------+
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| 3 | Bob | Operations | 48675 |
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| 90 | Alice | Sales | 11096 |
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| 9 | Tatiana | Engineering | 33805 |
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+-------------+---------+-------------+--------+
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<b>解释：</b>
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只有前 3 行被显示。</pre>
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