This document is an overview that systematically organizes sorting algorithms, a fundamental operation in computer science, covering basic concepts, evaluation metrics, the mechanics of ...

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1. 项目概述：为什么基数排序在Python里值得专门写一篇实操笔记？ “Python实现基数排序”这个标题看起来平平无奇，甚至有点老派——毕竟现在连面试都很少考手写排序了，大家更关心怎么调 sorted () 、怎么用 pandas.sort_values () 、怎么让GPU加速。

基数排序属于典型的非比较排序，它不靠两两元素之间比大小来决定顺序，而是按“位”来处理。你可以把它理解成整理一副扑克牌：先按花色分成四堆，再在每个花色里按点数排好；或者反过来，先按点数分成十三堆，再按花色排。无论哪种顺序，只要每轮分组是稳定的，最终都能得到有序结果。