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add leetcode problem-cn part6

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2022-03-27 20:56:26 +08:00
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算法题（国内版）/problem (Chinese)/x 的平方根 [sqrtx].html Normal file
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<p>给你一个非负整数 <code>x</code> ，计算并返回&nbsp;<code>x</code>&nbsp;的 <strong>算术平方根</strong> 。</p>
<p>由于返回类型是整数，结果只保留 <strong>整数部分 </strong>，小数部分将被 <strong>舍去 。</strong></p>
<p><strong>注意：</strong>不允许使用任何内置指数函数和算符，例如 <code>pow(x, 0.5)</code> 或者 <code>x ** 0.5</code> 。</p>
<p>&nbsp;</p>
<p><strong>示例 1：</strong></p>
<pre>
<strong>输入：</strong>x = 4
<strong>输出：</strong>2
</pre>
<p><strong>示例 2：</strong></p>
<pre>
<strong>输入：</strong>x = 8
<strong>输出：</strong>2
<strong>解释：</strong>8 的算术平方根是 2.82842..., 由于返回类型是整数，小数部分将被舍去。
</pre>
<p>&nbsp;</p>
<p><strong>提示：</strong></p>
<ul>
<li><code>0 &lt;= x &lt;= 2<sup>31</sup> - 1</code></li>
</ul>