public class Rectangle implements TwoDShape, Comparable<Rectangle>
{
	private double width, height;

    public Rectangle(double width, double height) {
    	this.width = width;
    	this.height = height;
    }
    
    public double area() {
    	return width * height;
    }
    
    public double perimeter() {
    	return 2 * (width + height);
    }  
    
    public int compareTo (Rectangle r) {	
    	return (int)(this.area() - r.area());
    }
    
    public String toString() {
    	return "R:"+width+","+height+"/"+area();
    }
    	
} // Rectangle