Extensions of 'sun' (2) X47900
Write a function @is_sun_extension(s)@ that given an string
,
returns True if it is possible to form the
word sun by erasing zero or more letters in
and False otherwise. Do not use the
index() string method to solve this
problem.
Sample session
Sample session
>>> is_sun_extension('sun') True >>> is_sun_extension('assumption') True >>> is_sun_extension('assume') False >>> is_sun_extension('russian') False >>> is_sun_extension('scouting') True >>> is_sun_extension('innocuous') False
Information
- Author
- ProAl
- Language
- English
- Official solutions
- Python
- User solutions
- Python