V2EX max-heap

Max-heap

Definition|释义

最大堆:一种堆(heap)数据结构,满足每个节点的键值都大于或等于其子节点,因此根节点始终是最大值。常用于实现优先队列堆排序。(通常以数组形式存储的二叉堆最常见)

Pronunciation|发音(IPA)

/mks hip/

Examples|例句

A max-heap lets you find the largest number quickly.
最大堆可以让你快速找到最大的数字。

We used a max-heap to keep track of the top 100 scores while processing millions of records.
我们用最大堆在处理数百万条记录时持续维护最高的100个分数。

Etymology|词源

max- 来自 maximum(最大值)的缩写;heap 原义为“堆、堆积”。在计算机科学中,heap 被借用来指一种“像堆一样组织”的结构;而 max-heap 特指“最大值位于顶部(根节点)”的堆。与之相对的是 min-heap(最小堆)

Related Words|相关词

In Literature|文学与经典著作中的出现

  • Introduction to Algorithms(CLRS,《算法导论》):在优先队列与堆排序章节系统讲解 max-heap 的性质与操作。
  • Algorithms(Robert Sedgewick & Kevin Wayne,《算法》):介绍二叉堆及其作为优先队列实现时的最大堆用法。
  • Data Structures and Algorithm Analysis(Mark Allen Weiss,《数据结构与算法分析》系列):在堆与优先队列部分频繁使用 max-heap 概念与实现细节。
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