python 二分法例子及冒泡排序

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

def binary_search(source_data,find_nu):
    mid = len(source_data)/2
    if len(source_data) >= 1:
        if source_data[mid] > find_nu:
            print 'data in left of %s' % source_data[mid]
            binary_search(source_data[:mid],find_nu)
        elif source_data[mid] < find_nu:
            print 'data in right of %s' % source_data[mid]
            binary_search(source_data[mid:],find_nu)
        else:
            print 'found_nu is',source_data[mid]

    else:
        print 'find_nu not found'


if __name__ == '__main__':
    data =  range(1,6000000)
    binary_search(data,0)

 冒泡排序：

data = [10,4,33,21,54,3,8,11,5,22,2,1,17,13,6]
 
print("before sort:",data)
 
previous = data[0]
for j in range(len(data)):
    tmp = 0
    for i in range(len(data)-1):
        if data[i] > data[i+1]:
            tmp=data[i]
            data[i] = data[i+1]
            data[i+1] = tmp
    print(data)
 
print("after sort:",data)