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chapter_array_and_linkedlist/linked_list/index.html
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@ -2803,7 +2803,7 @@
<a id="__codelineno-64-3" name="__codelineno-64-3" href="#__codelineno-64-3"></a><span class="w"> </span><span class="nx">val</span><span class="p">;</span>
<a id="__codelineno-64-4" name="__codelineno-64-4" href="#__codelineno-64-4"></a><span class="w"> </span><span class="nx">next</span><span class="p">;</span>
<a id="__codelineno-64-5" name="__codelineno-64-5" href="#__codelineno-64-5"></a><span class="w"> </span><span class="nx">prev</span><span class="p">;</span>
<a id="__codelineno-64-6" name="__codelineno-64-6" href="#__codelineno-64-6"></a><span class="w"> </span><span class="kr">constructor</span><span class="p">(</span><span class="nx">val</span><span class="p">,</span><span class="w"> </span><span class="nx">next</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-64-6" name="__codelineno-64-6" href="#__codelineno-64-6"></a><span class="w"> </span><span class="kr">constructor</span><span class="p">(</span><span class="nx">val</span><span class="p">,</span><span class="w"> </span><span class="nx">next</span><span class="p">,</span><span class="w"> </span><span class="nx">prev</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-64-7" name="__codelineno-64-7" href="#__codelineno-64-7"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">val</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">val</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="kc">undefined</span><span class="w"> </span><span class="o">?</span><span class="w"> </span><span class="mf">0</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="nx">val</span><span class="p">;</span><span class="w"> </span><span class="c1">// 节点值</span>
<a id="__codelineno-64-8" name="__codelineno-64-8" href="#__codelineno-64-8"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">next</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">next</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="kc">undefined</span><span class="w"> </span><span class="o">?</span><span class="w"> </span><span class="kc">null</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="nx">next</span><span class="p">;</span><span class="w"> </span><span class="c1">// 指向后继节点的指针（引用）</span>
<a id="__codelineno-64-9" name="__codelineno-64-9" href="#__codelineno-64-9"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">prev</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">prev</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="kc">undefined</span><span class="w"> </span><span class="o">?</span><span class="w"> </span><span class="kc">null</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="nx">prev</span><span class="p">;</span><span class="w"> </span><span class="c1">// 指向前驱节点的指针（引用）</span>

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chapter_data_structure/summary/index.html
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@ -1905,7 +1905,7 @@
<li>计算机中的基本数据类型包括整数 byte, short, int, long 、浮点数 float, double 、字符 char 和布尔 boolean 。它们的取值范围取决于占用空间大小和表示方式。</li>
<li>原码、反码和补码是在计算机中编码数字的三种方法，它们之间是可以相互转换的。整数的原码的最高位是符号位，其余位是数字的值。</li>
<li>整数在计算机中是以补码的形式存储的。在补码表示下，计算机可以对正数和负数的加法一视同仁，不需要为减法操作单独设计特殊的硬件电路，并且不存在正负零歧义的问题。</li>
<li>浮点数的编码由 1 位符号位、8 位指数位和 23 位分数为构成。由于存在指数位，浮点数的取值范围远大于整数，代价是牺牲了精度。</li>
<li>浮点数的编码由 1 位符号位、8 位指数位和 23 位分数位构成。由于存在指数位，浮点数的取值范围远大于整数，代价是牺牲了精度。</li>
<li>ASCII 码是最早出现的英文字符集，长度为 1 字节，共收录 127 个字符。GBK 字符集是常用的中文字符集，共收录两万多个汉字。Unicode 致力于提供一个完整的字符集标准，收录世界内各种语言的字符，从而解决由于字符编码方法不一致而导致的乱码问题。</li>
<li>UTF-8 是最受欢迎的 Unicode 编码方法，通用性非常好。它是一种变长的编码方法，具有很好的扩展性，有效提升了存储空间的使用效率。UTF-16 和 UTF-32 是等长的编码方法。在编码中文时，UTF-16 比 UTF-8 的占用空间更小。Java, C# 等编程语言默认使用 UTF-16 编码。</li>
</ul>

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chapter_graph/graph_operations/index.html
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<li><strong>添加边</strong>：在顶点对应链表的末尾添加边即可，使用 <span class="arithmatex">\(O(1)\)</span> 时间。因为是无向图，所以需要同时添加两个方向的边。</li>
<li><strong>删除边</strong>：在顶点对应链表中查找并删除指定边，使用 <span class="arithmatex">\(O(m)\)</span> 时间。在无向图中，需要同时删除两个方向的边。</li>
<li><strong>添加顶点</strong>：在邻接表中添加一个链表，并将新增顶点作为链表头节点，使用 <span class="arithmatex">\(O(1)\)</span> 时间。</li>
<li><strong>删除顶点</strong>：需遍历整个邻接表，删除包含指定顶点的所有边，使用 <span class="arithmatex">\(O(1)\)</span> 时间。</li>
<li><strong>删除顶点</strong>：需遍历整个邻接表，删除包含指定顶点的所有边，使用 <span class="arithmatex">\(O(n + m)\)</span> 时间。</li>
<li><strong>初始化</strong>：在邻接表中创建 <span class="arithmatex">\(n\)</span> 个顶点和 <span class="arithmatex">\(2m\)</span> 条边，使用 <span class="arithmatex">\(O(n + m)\)</span> 时间。</li>
</ul>
<div class="tabbed-set tabbed-alternate" data-tabs="3:5"><input checked="checked" id="__tabbed_3_1" name="__tabbed_3" type="radio" /><input id="__tabbed_3_2" name="__tabbed_3" type="radio" /><input id="__tabbed_3_3" name="__tabbed_3" type="radio" /><input id="__tabbed_3_4" name="__tabbed_3" type="radio" /><input id="__tabbed_3_5" name="__tabbed_3" type="radio" /><div class="tabbed-labels"><label for="__tabbed_3_1">初始化邻接表</label><label for="__tabbed_3_2">添加边</label><label for="__tabbed_3_3">删除边</label><label for="__tabbed_3_4">添加顶点</label><label for="__tabbed_3_5">删除顶点</label></div>

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