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chapter_data_structure/number_encoding/index.html
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<li class="md-nav__item">
<a href="#331" class="md-nav__link">
3.3.1 &nbsp; 原码、反码和补码
3.3.1 &nbsp; 整数编码
</a>
</li>
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<li class="md-nav__item">
<a href="#331" class="md-nav__link">
3.3.1 &nbsp; 原码、反码和补码
3.3.1 &nbsp; 整数编码
</a>
</li>
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<p class="admonition-title">Note</p>
<p>在本书中，标题带有的 * 符号的是选读章节。如果你时间有限或感到理解困难，可以先跳过，等学完必读章节后再单独攻克。</p>
</div>
<h2 id="331">3.3.1 &nbsp; 原码、反码和补码<a class="headerlink" href="#331" title="Permanent link">&para;</a></h2>
<h2 id="331">3.3.1 &nbsp; 整数编码<a class="headerlink" href="#331" title="Permanent link">&para;</a></h2>
<p>在上一节的表格中我们发现，所有整数类型能够表示的负数都比正数多一个，例如 <code>byte</code> 的取值范围是 <span class="arithmatex">\([-128, 127]\)</span> 。这个现象比较反直觉，它的内在原因涉及到原码、反码、补码的相关知识。</p>
<p>首先需要指出，<strong>数字是以“补码”的形式存储在计算机中的</strong>。在分析这样做的原因之前，我们首先给出三者的定义。</p>
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