public class Printing {

    public static void printStars(int amount) {
        // 39.1
        // you can print one star with the command
        for(int i=0;i<amount;i++){
            System.out.print("*");
        }

        System.out.println();
    }

    public static void printSquare(int sideSize) {
        // 39.2
        System.out.println();
        for(int i=0;i<sideSize;i++){
            printStars(4);
        }

    }

    public static void printRectangle(int width, int height) {
        // 39.3

        for(int i=0;i<height;i++){
                printStars(width);
        }
        System.out.println();
    }

    public static void printTriangle(int size) {
        // 39.4

        int increasing_size = (size - (size-1));

        for(int i=1;i<=size;i++){

            printStars(increasing_size);

            increasing_size += 1;
        }

    }

    public static void main(String[] args) {
        // Tests do not use main, yo can write code here freely!
        // if you have problems with tests, please try out first
        // here to see that the printout looks correct

        printStars(5);
        printStars(3);
        printStars(9);

        System.out.println("\n---");  // printing --- to separate the figures
        printSquare(4);
        System.out.println("\n---");
        printRectangle(17, 3);
        System.out.println("\n---");
        printTriangle(3);
        System.out.println("\n---");
    }

}