题目链接
英文链接:https://leetcode.com/problems/occurrences-after-bigram/
中文链接:https://leetcode-cn.com/problems/occurrences-after-bigram/
题目详述
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:
1 | 输入:text = "alice is a good girl she is a good student", first = "a", second = "good" |
示例 2:
1 | 输入:text = "we will we will rock you", first = "we", second = "will" |
提示:
- 1 <= text.length <= 1000
- text 由一些用空格分隔的单词组成,每个单词都由小写英文字母组成
- 1 <= first.length, second.length <= 10
- first 和 second 由小写英文字母组成
题目详解
- 首先对字符串进行分割,得到单词数组。
- 然后遍历数组,判断是否满足条件,满足条件就加入结果集中。
1 | public class LeetCode_01078 { |