carloscn / carloscn/structstudy

leetcode1078:Bigram 分词(occurrences-after-bigram)

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Description

### 问题描述

给出第一个词 first 和第二个词 second,考虑在某些文本 text 中可能以 "first second third" 形式出现的情况,其中 second 紧随 first 出现,third 紧随 second 出现。

对于每种这样的情况,将第三个词 "third" 添加到答案中,并返回答案。

 

示例 1:

输入:text = "alice is a good girl she is a good student", first = "a", second = "good"
输出:["girl","student"]

示例 2:

输入:text = "we will we will rock you", first = "we", second = "will"
输出:["we","rock"]
 

提示:

1 <= text.length <= 1000
text 由小写英文字母和空格组成
text 中的所有单词之间都由 单个空格字符 分隔
1 <= first.length, second.length <= 10
first 和 second 由小写英文字母组成

来源:力扣(LeetCode)
链接:https://leetcode.cn/problems/occurrences-after-bigram

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