csdn_spider/blog/ds19991999/原创-- 专题-排序算法.md

71 lines
1.4 KiB
Markdown
Raw Blame History

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

# 原创
专题:排序算法
# 专题:排序算法
## 专题:排序算法
#### 文章目录
### 1、排序分类
|算法|平均|最好|最坏|空间|稳定性
|------
|冒泡排序|O(N^2)|O(N)|O(N^2)|O(1)|稳定
|直接插入排序|O(N^2)|O(N)|O(N^2)|O(1)|稳定
|折半插入排序|O(NlogN)|O(NlogN)|O(N^2)|O(1)|稳定
|简单选择排序|O(N^2)|O(N^2)|O(N^2)|O(1)|不稳定
|快速排序|O(NlogN)|O(NlogN)|O(N^2)|O(logN)~O(N^2)|不稳定
|希尔排序|O(NlogN)| |O(n^s)|O(1)|不稳定
|归并排序|O(NlogN)|O(NlogN)|O(NlogN)|O(N)|稳定
|堆排序|O(NlogN)|O(NlogN)|O(NlogN)|O(1)|不稳定
|基数排序|O(d(n+r_d))| |O(d(n+r_d))|O(r_d)|稳定
|二叉树排序|O(n+k)|O(n+k)|O(n+k)|O(n+k)|稳定
外部排序较为复杂,后续更新。。。
### 2、常识总结
>
<p>助记:**快些**以
n
l
o
g
2
n
nlog_2n
nlog2n的速度**归队**</p>
>
稳定性助记:考研复习痛苦啊,情绪**不稳定****快些选一堆**好友来聊天吧.
这里需要注意简单选择排序有两个版本,交换板(数组为载体)和插入版(链表为载体),后者能得到稳定的结果。
>
更新于2018年10月25日00:30