37 lines
485 B
Python

#!/usr/bin/env python
__author__ = "bt3"
def revert(string):
'''
>>> s = 'hello'
>>> revert(s)
'olleh'
>>> revert('')
''
'''
return string[::-1]
def reverse_string_inplace(s):
'''
>>> s = 'hello'
>>> reverse_string_inplace(s)
'olleh'
>>> reverse_string_inplace('')
''
'''
if s:
s = s[-1] + reverse_string_inplace(s[:-1])
return s
if __name__ == '__main__':
import doctest
doctest.testmod()