题目描述:
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"]
题解:
代码如下:
class Solution {
public String[] findOcurrences(String text, String first, String second) {
String[] arr = text.split(" ");
List<String> list = new ArrayList<>();
for(int i = 0;i < arr.length - 2;i++){
if(arr[i].equals(first) && arr[i + 1].equals(second)){
list.add(arr[i + 2]);
}
}
String[] res = new String[list.size()];
for(int i = 0;i < res.length;i++){
res[i] = list.get(i);
}
return res;
}
}
代码执行结果: