import java.io.*;
import java.util.*;

// Some examples of recursion.
public class Recurse {
    public static void main(String[] args) throws FileNotFoundException {
        writeStars1(10);
        writeStars2(7);
        reverse(new Scanner(new File("story.txt")));
    }
    
    // Iterative method that produces an output
    // line of exactly n stars
    // pre: n >= 0
    public static void writeStars1(int n) {
        for (int i = 0; i < n; i++) {
            System.out.print("*");
        }
        System.out.println();
    }
    
    // Recursive method that produces an output
    // line of exactly n stars
    // pre: n >= 0
    public static void writeStars2(int n) {
        // recursion zen
        if (n == 0) {
            System.out.println();
        } else {
            System.out.print("*");
            writeStars2(n - 1);
        }
    }
    
    // Reads in the lines from the Scanner, printing
    // them to standard out in reverse order.
    public static void reverse(Scanner input) {
        if (input.hasNextLine()) {
            String line = input.nextLine();
            reverse(input);
            System.out.println(line);
        }
    }
}