def main():
string=input("Enter a string:")
string1=reverse(string)
print(string+" 's reverse format is "+string1)
def reverse(string):
if string !=' ':
return reverseRecursion(string)
else:
return string
def reverseRecursion(string):
if len(string)==2:
return string[1]+string[0]
else:
return string[-1]+reverseRecursion(string[:-1])
main()
备注:用python自带的方法实现逆转
string = "abc"
''.join(list(reversed(string)))