python反轉(zhuǎn)(逆序)字符串的6種方法詳細(xì)

>>> def strReverse(strDemo):
	return strDemo[::-1]
>>> print(strReverse('jb51.net'))
ten.15bj

>>> def strReverse(strDemo):
	strList=[]
	for i in range(len(strDemo)-1, -1, -1):
		strList.append(strDemo[i])
	return ''.join(strList)

>>> print(strReverse('jb51.net'))
ten.15bj

>>> def strReverse(strDemo): 
	strList = list(strDemo) 
	strList.reverse() 
	return ''.join(strList)

>>> print(strReverse('jb51.net'))
ten.15bj

>>> import collections
>>> def strReverse(strDemo): 
	deque1=collections.deque(strDemo) 
	deque2=collections.deque() 
	for tmpChar in deque1: 
		deque2.extendleft(tmpChar) 
	return ''.join(deque2)

>>> print(strReverse('jb51.net'))
ten.15bj

>>> def strReverse(strDemo): 
	if len(strDemo)=1: 
		return strDemo 
	return strDemo[-1]+strReverse(strDemo[:-1])

>>> print(strReverse('jb51.net'))
ten.15bj

>>> def strReverse(strDemo): 
	strList=list(strDemo) 
	if len(strList)==0 or len(strList)==1: 
		return strList 
	i=0 
	length=len(strList) 
	while i  length/2: 
		strList[i], strList[length-i-1]=strList[length-i-1], strList[i] 
		i+=1
	return ''.join(strList)

>>> print(strReverse('jb51.net'))
ten.15bj