Case Flipper
This kind of text transformation is common when you need to scan a string and change each letter. Write a function to_alternating_case that takes a string string and inverts the case of every letter: lowercase becomes uppercase, and uppercase becomes lowercase. Spaces, digits, and other characters should stay unchanged.
Примеры
Ввод
"hello world"Вывод
"HELLO WORLD"Ввод
"HELLO WORLD"Вывод
"hello world"Ввод
"HeLLo WoRLD"Вывод
"hEllO wOrld"Нужно реализовать
def to_alternating_case(string: str) -> str:
Теги
strings
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They run when you press "Submit" — your whole solution is checked against them so you can't hard-code answers for the visible cases.
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