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exists implementation in plain old java
public class TweetUtil {
public static void main(String[] args) {
final List<String> keywords = Arrays.asList("brown", "fox", "dog", "pangram");
final String tweet = "The quick brown fox jumps over a lazy dog. #pangram";
exists(keywords, tweet);
public static boolean exists(List<String> keywords, String tweet) {
for (String keyword : keywords) {
if (tweet.contains(keyword)) return true;
return false;
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