python 冒泡和快排，不多说【无聊】

 1 #-*-coding:utf8-*-
 2 import random
 3 a=[]
 4 b=[]
 5 def init_array():
 6     for i in range(10000):
 7         v = random.randint(1,10000)
 8         a.append(v)
 9         b.append(v)
10
11 #冒泡
12 def sort_array(a):
13         for i in range(len(a)):
14                 for j in range(i+1,len(a)):
15                     if a[i] > a[j]:
16                         i_v = a[i]
17                         a[i]=a[j]
18                         a[j]=i_v
19
20
21 #快排
22 def quick_sort(a,left,right):
23     if left < right:
24         key = a[left]
25         low = left
26         high = right
27         while low<high:
28             while low<high and a[high]>=key:
29                 high-=1
30             a[low] = a[high]
31             while low<high and a[low]<=key:
32                 low+=1
33             a[high]=a[low]
34         a[low]=key
35         quick_sort(a,left,low-1)
36         quick_sort(a,low+1,right)
37
38
39 init_array()
40
41 print "a",len(a)
42 print "b",len(b)
43
44 sort_array(a)
45 quick_sort(b,0,len(b)-1)
46
47 print a,len(a)
48 print b,len(b)

以上保存为 sort.py,然后：python  -m cProfile  sort.py

冒泡时间复杂度O(n^2)快排最差O(n^2),平均O(n*lgn)