给一个String, 里面的Word被single space split开来, 目的是reverse里面所有的Word, 但preserve Word 和 space order. Note: In the string, each word is separated by single space and there will not be any extra space in the ...

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With this, another approach is to reverse the provided String, extract the first word, and then re-reverse the String to get the extracted String back in the correct order.