mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
40 lines
1.1 KiB
HTML
40 lines
1.1 KiB
HTML
<p>实现 <a href="https://www.cplusplus.com/reference/valarray/pow/">pow(<em>x</em>, <em>n</em>)</a> ，即计算 x 的 n 次幂函数（即，x<sup>n</sup>）。</p>
|
||
|
||
<p> </p>
|
||
|
||
<p><strong>示例 1：</strong></p>
|
||
|
||
<pre>
|
||
<strong>输入：</strong>x = 2.00000, n = 10
|
||
<strong>输出：</strong>1024.00000
|
||
</pre>
|
||
|
||
<p><strong>示例 2：</strong></p>
|
||
|
||
<pre>
|
||
<strong>输入：</strong>x = 2.10000, n = 3
|
||
<strong>输出：</strong>9.26100</pre>
|
||
|
||
<p><strong>示例 3：</strong></p>
|
||
|
||
<pre>
|
||
<strong>输入：</strong>x = 2.00000, n = -2
|
||
<strong>输出：</strong>0.25000
|
||
<strong>解释：</strong>2<sup>-2</sup> = 1/2<sup>2</sup> = 1/4 = 0.25</pre>
|
||
|
||
<p> </p>
|
||
|
||
<p><strong>提示：</strong></p>
|
||
|
||
<ul>
|
||
<li><code>-100.0 < x < 100.0</code></li>
|
||
<li><code>-2<sup>31</sup> <= n <= 2<sup>31</sup>-1</code></li>
|
||
<li><code>-10<sup>4</sup> <= x<sup>n</sup> <= 10<sup>4</sup></code></li>
|
||
</ul>
|
||
|
||
<p> </p>
|
||
|
||
<p>注意：本题与主站 50 题相同：<a href="https://leetcode-cn.com/problems/powx-n/">https://leetcode-cn.com/problems/powx-n/</a></p>
|
||
|
||
<p> </p>
|