LeetCode——1078. Bigram 分词

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。

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

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”]

代码如下:

class Solution {
    
    
    public String[] findOcurrences(String text, String first, String second) {
    
    
        String[] str = text.split(" ");
        int n = str.length;
        ArrayList<String> arr = new ArrayList<>();
        for (int i = 0; i < n - 2; i++) {
    
    
            if (str[i].equals(first) && str[i + 1].equals(second)) {
    
    
                arr.add(str[i + 2]);
            }
        }
        int len = arr.size();
        String[] S = new String[len];
        for (int i = 0; i < len; i++) {
    
    
            S[i] = arr.get(i);
        }
        return S;
    }
}

执行结果:
在这里插入图片描述

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转载自blog.csdn.net/FYPPPP/article/details/114632232
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