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python冒泡排序算法的实现代码

WBOY
WBOYOriginal
2016-06-16 08:46:131487browse

1.算法描述:
(1)共循环 n-1 次
(2)每次循环中,如果 前面的数大于后面的数,就交换
(3)设置一个标签,如果上次没有交换,就说明这个是已经好了的。

2.python冒泡排序代码

复制代码 代码如下:

#!/usr/bin/python
# -*- coding: utf-8 -*-

def bubble(l):
    flag = True
    for i in range(len(l)-1, 0, -1):
        if flag:
            flag = False
            for j in range(i):
                if l[j] > l[j + 1]:
                    l[j], l[j+1] = l[j+1], l[j]
                    flag = True
        else:
            break
    print l

li = [21,44,2,45,33,4,3,67]
bubble(li)



结果:[2, 3, 4, 21, 33, 44, 45, 67]
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