mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-24 21:41:08 +00:00
34 lines
837 B
Python
34 lines
837 B
Python
|
def strip(user_string: str, characters: str = " \t\n\r") -> str:
|
||
|
|
"""
|
||
|
|
Remove leading and trailing characters (whitespace by default) from a string.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
user_string (str): The input string to be stripped.
|
||
|
|
characters (str, optional): Optional characters to be removed
|
||
|
|
(default is whitespace).
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
str: The stripped string.
|
||
|
|
|
||
|
|
Examples:
|
||
|
|
>>> strip(" hello ")
|
||
|
|
'hello'
|
||
|
|
>>> strip("...world...", ".")
|
||
|
|
'world'
|
||
|
|
>>> strip("123hello123", "123")
|
||
|
|
'hello'
|
||
|
|
>>> strip("")
|
||
|
|
''
|
||
|
|
"""
|
||
|
|
|
||
|
|
start = 0
|
||
|
|
end = len(user_string)
|
||
|
|
|
||
|
|
while start < end and user_string[start] in characters:
|
||
|
|
start += 1
|
||
|
|
|
||
|
|
while end > start and user_string[end - 1] in characters:
|
||
|
|
end -= 1
|
||
|
|
|
||
|
|
return user_string[start:end]
|