使用整數 Arraylist 從字符串中提取單詞

Question

如何使用提取數組列表來獲取文本字符串中該索引處的單詞？

ArrayList<Interger> extract = new ArrayList<Interger>();

extract.add(22); extract.add(37);

String text ="How do I get the this word? And this word?";

結果應該是 (word,word)

Answer 1

List<String> words = new ArrayList<>();
for (int index : extract) {
    words.add(text.substring(index).split("\\b")[0]);
}
System.out.println(words);
// [word, word]