System.out.println(Shape.sumAllPerimeter(shapes));
ClassName是类名,可以自由命名 ...是类的内部语句,一般是写类方法(很像函数,具体见后面),也可以写一些其他的。 比如类内部不实现具体功能的时候,还可以写个pass. 具体例子如下 classSimpleClass:pass 这就是定义了一个基础的类SimpleClass,其没有实现任何具体的功能。 创建对象 定义好了类之后,我们可以用这个类...
已知四个类之间的关系如图 7-1 所示,分别对每个类的方法进行编号,例如 Shape的 perimeter()为 1 号,表示为“1:perimeter()”,Rectangle 类的 perimeter()为 2 号,表示为“2:perimeter()” ,依此类推,其中,每个类的 perimeter方法签名相同。 [Java 代码] Triangle tr = new Triangle(); Square sq = new...
#拆分数据集fromsklearn.model_selectionimporttrain_test_split X_train, X_test, y_train, y_test= train_test_split(X, y, test_size = 0.2, random_state =0)print(X_train.shape)print(X_test.shape)print(y_train.shape)print(y_test.shape) (43136, 23) (10784, 23) (43136,) (10784,) ...
(Card card1:rectangleList 95 ) { 96 triangleSum+= card1.getShape().getArea(); 97 } 98 for (Card card2:trapezoidList 99 ) { 100 trapezoidSum+=card2.getShape().getArea(); 101 } 102 for (Card card3:triangleList 103 ) { 104 triangleSum+=card3.getShape().getArea(); 105 } 106...
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Word。DrawingShape DocumentFormat.OpenXml.Office2013.Drawing DocumentFormat.OpenXml.Office2013.Drawing.Chart DocumentFormat.OpenXml.Office2013.Drawing.ChartStyle DocumentFormat.OpenXml.Office2013.Drawing.TimeSlicer DocumentFormat.OpenXml.Office2013.Excel DocumentFormat.OpenXml.Office2013.ExcelAc DocumentFormat.Open...
1.使用interface关键字定义Shape接口,接口中包含一个求解面积的方法定义;2.使用extends从接口Shape派生出接口Shape2D和Shape3D接口,并为接口Shape2D添加一个求解周长的方法定义;为接口Shape3D添加一个求解体积的方法定义;3.编写一个Circle类,该类实现Shape2D接口;...
2.S-size,告诉大家物体的大小,如big, small, tall, huge, tiny(大的,小的,高的,巨大的,极小的)等。 3.H-shape,描述物体形状的词,还包括Weight(重量) / Length(长度),如round, square, fat, heavy, straight, long, short(圆的,正方形的,胖的,重的,直的,长的,短的)… ...