List of Products

  import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

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

        int n = Integer.parseInt(scanner.nextLine());

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

        for (int i = 0; i < n; i++) {
            String product = scanner.nextLine();

            listOfProduct.add(product);
        }
        Collections.sort(listOfProduct);
        for (int i = 0; i < listOfProduct.size(); i++) {
            System.out.printf("%d.%s%n", i + 1, listOfProduct.get(i));
        }
    }
}