Emoji_Detector

package FinalExamPrep2907_2;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class P02_EmojiDetector {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String input = scanner.nextLine();
        String regex = "([:*]{2})(?<emoji>[A-Z][a-z]{2,})\\1";

        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(input);

        List<String> coolEmojisList = new ArrayList<>();

        long coolThreshold = 1;
        for (int i = 0; i < input.length(); i++) {
            char currentCh = input.charAt(i);
            if (Character.isDigit(currentCh)) {
                int currentDigit = Integer.parseInt(currentCh + "");
                coolThreshold *= currentDigit;
            }
        }

        int countEmojis = 0;
        while (matcher.find()) {
            countEmojis++;
            String delimiter = matcher.group(1);
            String emojiWord = matcher.group("emoji");
            int currentEmojiCoolness = 0;
            for (int i = 0; i < emojiWord.length(); i++) {
                char currentCh = emojiWord.charAt(i);
                currentEmojiCoolness += (int)(currentCh);
            }

            if (currentEmojiCoolness > coolThreshold) {
                coolEmojisList.add(delimiter + emojiWord + delimiter);
            }
        }

        System.out.println("Cool threshold: " + coolThreshold);
        System.out.printf("%d emojis found in the text. The cool ones are:%n", countEmojis);
        for (String e : coolEmojisList) {
            System.out.println(e);
        }
    }
}