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krahets
2023-08-20 14:52:42 +08:00
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<h2 id="1163">11.6.3 &nbsp; 链表排序 *<a class="headerlink" href="#1163" title="Permanent link">&para;</a></h2>
<p>归并排序在排序链表时具有显著优势，空间复杂度可以优化至 <span class="arithmatex">\(O(1)\)</span> ，原因如下：</p>
<ul>
<li>由于链表仅需改变指针就可实现节点的增删操作，因此合并阶段（将两个短有序链表合并为一个长有序链表）无需创建辅助链表。</li>
<li>由于链表仅需改变指针就可实现节点的增删操作，因此合并阶段（将两个短有序链表合并为一个长有序链表）无须创建辅助链表。</li>
<li>通过使用“迭代划分”替代“递归划分”，可省去递归使用的栈帧空间。</li>
</ul>
<p>具体实现细节比较复杂，有兴趣的同学可以查阅相关资料进行学习。</p>