python倒序打印一句英语

上一篇 / 下一篇 2016-04-09 13:45:47 / 个人分类：python

看到一个面试题要求是倒序打印一句英语

例如'this is a book' 转成 'book a is this' 要考虑空间

写法1：

str = 'this is a book'

list = list(str)

a =[]

b= ''

for i in range(0,len(list)):

a.append(list[i])

if list[i] == ' ':

b = ' ' + ''.join(a[0:-1]) + b

a=[]

if i == (len(list)-1) :

b = ''.join(a) +b

print b

写法2：

def descStr():

str = 'this is a book'

str = str.split(' ') #['this', 'is', 'a', 'book']

list = []

n = -1

for i in str:

list.insert(n,i)

n=n-1

print ' '.join(list)

descStr()

写法3：

# coding:utf-8

string ="What's your name"

s1 = string.split()

s2 = s1[::-1]


print' '.join(s2)# name your What's

欢迎交流写得不好请指教！