方法一
str
=
input
(
'请输入若干字符:'
)
def
f(x):
if
x
=
=
-
1
:
return
''
else
:
return
str
[x]
+
f(x
-
1
)
print
(f(
len
(
str
)
-
1
))
方法二
str
=
list
(
input
(
'请输入若干字符:'
))
str
.reverse()#reverse()方法反转
print
(''.join(
str
))