{ "data": { "question": { "questionId": "1970", "questionFrontendId": "1859", "categoryTitle": "Algorithms", "boundTopicId": 772197, "title": "Sorting the Sentence", "titleSlug": "sorting-the-sentence", "content": "
A sentence is a list of words that are separated by a single space with no leading or trailing spaces. Each word consists of lowercase and uppercase English letters.
\r\n\r\nA sentence can be shuffled by appending the 1-indexed word position to each word then rearranging the words in the sentence.
\r\n\r\n"This is a sentence"
can be shuffled as "sentence4 a3 is2 This1"
or "is2 sentence4 This1 a3"
.Given a shuffled sentence s
containing no more than 9
words, reconstruct and return the original sentence.
\r\n
Example 1:
\r\n\r\n\r\nInput: s = "is2 sentence4 This1 a3"\r\nOutput: "This is a sentence"\r\nExplanation: Sort the words in s to their original positions "This1 is2 a3 sentence4", then remove the numbers.\r\n\r\n\r\n
Example 2:
\r\n\r\n\r\nInput: s = "Myself2 Me1 I4 and3"\r\nOutput: "Me Myself and I"\r\nExplanation: Sort the words in s to their original positions "Me1 Myself2 and3 I4", then remove the numbers.\r\n\r\n\r\n
\r\n
Constraints:
\r\n\r\n2 <= s.length <= 200
s
consists of lowercase and uppercase English letters, spaces, and digits from 1
to 9
.s
is between 1
and 9
.s
are separated by a single space.s
contains no leading or trailing spaces.一个 句子 指的是一个序列的单词用单个空格连接起来,且开头和结尾没有任何空格。每个单词都只包含小写或大写英文字母。
\n\n我们可以给一个句子添加 从 1 开始的单词位置索引 ,并且将句子中所有单词 打乱顺序 。
\n\n\"This is a sentence\"
可以被打乱顺序得到 \"sentence4 a3 is2 This1\"
或者 \"is2 sentence4 This1 a3\"
。给你一个 打乱顺序 的句子 s
,它包含的单词不超过 9
个,请你重新构造并得到原本顺序的句子。
\n\n
示例 1:
\n\n\n输入:s = \"is2 sentence4 This1 a3\"\n输出:\"This is a sentence\"\n解释:将 s 中的单词按照初始位置排序,得到 \"This1 is2 a3 sentence4\" ,然后删除数字。\n\n\n
示例 2:
\n\n\n输入:s = \"Myself2 Me1 I4 and3\"\n输出:\"Me Myself and I\"\n解释:将 s 中的单词按照初始位置排序,得到 \"Me1 Myself2 and3 I4\" ,然后删除数字。\n\n
\n\n
提示:
\n\n2 <= s.length <= 200
s
只包含小写和大写英文字母、空格以及从 1
到 9
的数字。s
中单词数目为 1
到 9
个。s
中的单词由单个空格分隔。s
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