// date:17.3.28

// author: linyang <linyang@xiaomi.com>

public class TotalArea {

public static void main(String[] args) {

// declare circleArray;

Circle3[] circleArray;

//create circleArray

circleArray = createCircleArray();

printCircleArray(circleArray);

}

public static Circle3[] createCircleArray() {

Circle3[] circleArray = new Circle3[10];

for(int i = 0; i < circleArray.length; i++) {

circleArray[i] = new Circle3(Math.random() * 100);

}

return circleArray;

}

public static void printCircleArray(Circle3[] circleArray) {

System.out.println("Radius\t\t\t\t" + "Area");

for (int i = 0; i < circleArray.length; i++) {

System.out.print(circleArray[i].getRadius() + "\t\t" + circleArray[i].getArea() + '\n');

}

System.out.println("--------");

System.out.println("the total ares of circles is \t" + sum(circleArray));

}

public static double sum(Circle3[] circleArray) {

double sum = 0;

for (int i = 0; i < circleArray.length; i++) {

sum += circleArray[i].getArea();

}

return sum;

}

}