ELEMENTARY.02.Correct Sentence

任務：

For the input of your function will be given one sentence. You have to return its fixed copy in a way so it』s always starts with a capital letter and ends with a dot.

Pay attention to the fact that not all of the fixes is necessary. If a sentence already ends with a dot then adding another one will be a mistake.

Input: A string.

Output: A string.

Example:

correct_sentence("greetings, friends") == "Greetings, friends."ncorrect_sentence("Greetings, friends") == "Greetings, friends."ncorrect_sentence("Greetings, friends.") == "Greetings, friends."n

我的代碼：

def correct_sentence(text: str):n i = -1n if text[i] == .:n text = text.capitalize()n else:n while text[i].isalpha():n breakn else:n i -=1n text = text+.n text = text.capitalize()n return textn

大神們的代碼：

第一，Clear：

def correct_sentence(text: str) -> str:n """Corrected sentence starting with a capital letter, ending with a dot."""n return text.capitalize() + . * (not text.endswith(.))n

第二，Creative：

correct_sentence = lambda t: t.capitalize() + "." * (t[-1]!=".")n

第三，Speedy：

def correct_sentence(text: str) -> str:n """n returns a corrected sentence which starts with a capital lettern and ends with a dot.n """n # your code heren if(text.find(.) == -1):n text += .n return text.capitalize()n

我好像有個問題。不愛寫注釋。

以後的程序盡量爭取寫上。

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