View Code of Problem 97

import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;

public class Main {

	public static void solution() {
		Scanner sc = new Scanner(System.in);
		
		int count = sc.nextInt();
          
		sc.nextLine();
		while (count != 0) {
			Set<String> files = new HashSet<>();
			for (int i = 0; i < count; ++i) {
				files.add(sc.nextLine());
			}
			
			Set<String> virusSet = new TreeSet<>();
			
			Iterator<String> iterator = files.iterator();
			while (iterator.hasNext()) {
				String file = iterator.next();
				if (file.endsWith(".exe")) {
					String temp = file.substring(0, file.lastIndexOf(".exe"));
					if (files.contains(temp))
						virusSet.add(file);
				}
			}
			
	
			for (String file : virusSet)
				System.out.println(file);
			
			count = sc.nextInt();
			sc.nextLine();
		}
		
	}
	
	public static void main(String[] args) {
		solution();
	}
}