// Simple program to draw three diamonds of varying sizes.

public class Diamond4 {
    public static void main(String[] args) {
        drawDiamond(4);
        drawDiamond(6);
        drawDiamond(8);
    }

    // draws one diamond of the given size
    public static void drawDiamond(int size) {
        for (int row = 1; row <= size; row++) {
            drawRow(row, size, "/", "\\");
        }

        for (int row = size; row >= 1; row--) {
            drawRow(row, size, "\\", "/");
        }
    }
        
    // This is a helper method for the drawDiamond method.  It takes a row
    // number and size and the appropriate slash characters (either \/ or /\).
    public static void drawRow(int row, int size, String s1, String s2) {
        drawStrings(size - row, " ");
        drawStrings(1, s1);
        drawStrings(2 * row - 2, ".");
        drawStrings(1, s2);
        System.out.println();
    }
        
    // prints count occurrences of text to System.out
    public static void drawStrings(int count, String text) {
        for (int i = 1; i <= count; i++) {
            System.out.print(text);
        }
    }
}