V2EX build-heap

Build-Heap

释义 Definition

Build-heap 指在堆(heap)数据结构中,把一个无序数组/列表通过一系列调整操作转换成满足堆性质(如最大堆或最小堆)的过程。它是实现堆排序优先队列的基础步骤。(常见还包括其他含义较少用。)

发音 Pronunciation

/bld hip/

例句 Examples

We can build-heap from an array in linear time.
我们可以在线性时间内把一个数组建成堆。

After reading all the tasks into memory, the program build-heaps the list so the highest-priority item is always at the top.
把所有任务读入内存后,程序对列表进行建堆,使得最高优先级的项目始终位于顶部。

词源 Etymology

build 意为“建造、构建”,heap 在计算机科学中指“堆”(一种满足特定父子节点大小关系的树形结构,常用数组实现)。build-heap 作为算法术语,字面意思就是“把(数据)构建成一个堆”。该操作常通过自底向上的调整(如对非叶子节点做下滤/下沉)来完成。

相关词 Related Words

文学与作品 Literary Works

  • Introduction to Algorithms(Cormen, Leiserson, Rivest, Stein,常称 CLRS):在堆章节中系统介绍 BUILD-MAX-HEAP / BUILD-HEAP 的定义、过程与复杂度分析。
  • The Art of Computer Programming, Volume 3: Sorting and Searching(Donald E. Knuth):在排序与数据结构讨论中涉及堆及相关构建与调整思想。
  • Algorithms(Robert Sedgewick & Kevin Wayne):在优先队列/堆排序相关内容中使用并讲解建堆思想与实现。
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