下面给出一个矩形类Rectangle，其中含有多个构造方法。写出此程序的输出结果。<img src="https://nimg.ppkao.com/2019-05/wangjing/2019050612383970289.jpg?sign=4ef1814d6427af3afb0fff73a19ab4d2&t=62d7128c" /><img src="https://nimg.ppkao.com/2019-05/wangjing/2019050612384555255.jpg?sign=480923264afe1d3bce0ebd7b2f2a7b1c&t=62d7128c" /><br /> <img src="https://nimg.ppkao.com/2019-05/wangjing/2019050612385596098.jpg?sign=d11518ad217827f2ea668de6c07c896c&t=62d7128c" />