View Code of Problem 97

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            int n = scanner.nextInt();
            if (n == 0) {
                break;
            }
            List<String> list = new ArrayList<>();
            while (n-- > 0) {
                list.add(scanner.next());
            }
            List<String> res = new ArrayList<>();
            for (int i = 0; i < list.size(); i++) {
                String str=list.get(i);
                if (str.endsWith(".exe")) {
                    String substring = str.substring(0, str.length() - 4);
                    if (list.contains(substring)) {
                        res.add(str);
                    }
                }
            }
            Collections.sort(res);
            res.forEach(System.out::println);
        }
    }
}