Clean Spaces
Users often type text with extra spaces at the beginning, at the end, or between words. Write a function trim_spaces that cleans up the string s: remove spaces around the edges and replace multiple inner spaces with a single space. If the string contains only spaces, return an empty string.
Примеры
Ввод
" hello world "Вывод
"hello world"Ввод
"a b c"Вывод
"a b c"Ввод
" "Вывод
""Нужно реализовать
def trim_spaces(s: str) -> str:
Теги
strings
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1
Input
" hello world "Expected
"hello world"2
Input
"a b c"Expected
"a b c"3
Input
" "Expected
""4
Input
"python"Expected
"python"5
Input
" multiple inner spaces "Expected
"multiple inner spaces"6
Input
"hello world"Expected
"hello world"Focus radio
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