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  • 找最大图形面积 (抽象方法)

    //最大图形的面积
    public class ShapeTest {
    
        public static void main(String[] args) {
            Shape[] shapes = new Shape[4];
            shapes[0] = new Square(1);
            shapes[1] = new Square(2);
            shapes[2] = new Circle(1);
            shapes[3] = new Circle(2);
            maxArea(shapes);
    
        }
    
    
        public static void maxArea(Shape[] Shapes){
            double max = Shapes[0].area();
            int maxIndex = 0;
            for(int i=1;i<Shapes.length;i++){
                double area = Shapes[i].area();
                if(area>max){
                    max=area;
                    maxIndex=i;
                }
            }
            System.out.println("最大面积为:"+max+",所在下标为:"+maxIndex);
        }    
    }    
        
        
        
        abstract class Shape{
            protected double c;
            public abstract double area();
        }
    
        
        
        
        class Square extends Shape{
            public Square(double c){
                this.c=c;
            }
            public double area(){
                return 0.0625*c*c; //0.0796
            }
        } 
    
    
        
        
        class Circle extends Shape{
            public Circle(double c){
            this.c=c;
        }
            public double area(){
            return 0.0796*c*c;
        }
    }
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  • 原文地址:https://www.cnblogs.com/luckyBrown/p/5886918.html
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