V2EX stable-sort

Stable-sort

定义 Definition

stable-sort(稳定排序):一种排序方式/性质当两个元素的“排序关键字”相等时,排序后它们在结果中的相对先后顺序保持不变。常用于需要“先按A排序、再按B排序且不破坏前一次排序结果”的场景。(也可指实现稳定排序的算法或库函数。)

发音 Pronunciation (IPA)

/stebl srt/

例句 Examples

A stable-sort keeps equal items in the same order.
稳定排序会让相同关键字的元素保持原来的先后顺序。

When sorting students by grade, a stable-sort preserves the original order among students with the same grade, which makes multi-step sorting predictable.
当按成绩给学生排序时,稳定排序会在成绩相同的学生之间保留原有顺序,从而让多步骤排序更可预测。

词源 Etymology

stable 源自拉丁语 stabilis(“稳固的、稳定的”),sort 源自法语/拉丁语词根,意为“分类、整理”。组合成 stable sort,直观表达“排序时保持稳定(不打乱相等元素的相对次序)”这一概念。该术语在计算机科学与算法教材中广泛使用。

相关词 Related Words

文学与经典作品中的用例 Notable Works

  • Introduction to Algorithms(Cormen, Leiserson, Rivest, Stein,《算法导论》)在排序章节讨论“稳定性(stability)”与稳定排序。
  • The Art of Computer Programming, Volume 3: Sorting and Searching(Donald E. Knuth,《计算机程序设计艺术》第3卷:排序与查找)系统讲解多种排序及其性质(包括稳定性)。
  • The C++ Programming Language(Bjarne Stroustrup,《C++ 程序设计语言》)涉及标准库排序相关接口与“稳定排序”概念(如 stable_sort)。
  • Effective Java(Joshua Bloch,《Effective Java》)在使用库排序与比较器时常提及排序行为与可预期性(稳定性相关讨论常见于相关主题)。
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