{ "data": { "question": { "questionId": "648", "questionFrontendId": "648", "categoryTitle": "Algorithms", "boundTopicId": 1810, "title": "Replace Words", "titleSlug": "replace-words", "content": "
In English, we have a concept called root, which can be followed by some other word to form another longer word - let's call this word derivative. For example, when the root "help" is followed by the word "ful", we can form a derivative "helpful".
Given a dictionary consisting of many roots and a sentence consisting of words separated by spaces, replace all the derivatives in the sentence with the root forming it. If a derivative can be replaced by more than one root, replace it with the root that has the shortest length.
Return the sentence after the replacement.
\n
Example 1:
\n\n\nInput: dictionary = ["cat","bat","rat"], sentence = "the cattle was rattled by the battery"\nOutput: "the cat was rat by the bat"\n\n\n
Example 2:
\n\n\nInput: dictionary = ["a","b","c"], sentence = "aadsfasf absbs bbab cadsfafs"\nOutput: "a a b c"\n\n\n
\n
Constraints:
\n\n1 <= dictionary.length <= 10001 <= dictionary[i].length <= 100dictionary[i] consists of only lower-case letters.1 <= sentence.length <= 106sentence consists of only lower-case letters and spaces.sentence is in the range [1, 1000]sentence is in the range [1, 1000]sentence will be separated by exactly one space.sentence does not have leading or trailing spaces.在英语中,我们有一个叫做 词根(root) 的概念,可以词根 后面 添加其他一些词组成另一个较长的单词——我们称这个词为 衍生词 (derivative)。例如,词根 help,跟随着 继承词 \"ful\",可以形成新的单词 \"helpful\"。
现在,给定一个由许多 词根 组成的词典 dictionary 和一个用空格分隔单词形成的句子 sentence。你需要将句子中的所有 衍生词 用 词根 替换掉。如果 衍生词 有许多可以形成它的 词根,则用 最短 的 词根 替换它。
你需要输出替换之后的句子。
\n\n\n\n
示例 1:
\n\n\n输入:dictionary = [\"cat\",\"bat\",\"rat\"], sentence = \"the cattle was rattled by the battery\"\n输出:\"the cat was rat by the bat\"\n\n\n
示例 2:
\n\n\n输入:dictionary = [\"a\",\"b\",\"c\"], sentence = \"aadsfasf absbs bbab cadsfafs\"\n输出:\"a a b c\"\n\n\n
\n\n
提示:
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