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class Polygon {
private int[] sideLengths;
public Polygon(int sides, int... lengths) {
int index = 0;
sideLengths = new int[sides];
for (int length : lengths) {
sideLengths[index] = length;
index += 1;
}
}
public int side(int number) {
return sideLengths[number];
}
public int perimeter() {
int total = 0;
for (int index = 0; index < sideLengths.length; index += 1) {
total += side(index);
}
return total;
}
}
class Rectangle extends Polygon {
public Rectangle(int l, int w) {
super(4, l, w, l, w);
}
public int area() {
return this.side(0)*this.side(1);
}
}
class Square extends Rectangle {
public Square(int l) {
super(l, l);
}
// public int area() {
// return this.side(0)*this.side(1);
// }
}
class Shapes {
public static void main(String[] args) {
Rectangle wreck = new Rectangle(3, 5);
System.out.println(wreck.side(0)); // 3 1 point.
System.out.println(wreck.side(1)); // 5 1 point.
System.out.println(wreck.side(2)); // 3 1 point.
System.out.println(wreck.side(3)); // 5 1 point.
System.out.println(wreck.area()); // 15 1 point.
System.out.println(wreck.perimeter()); // 16 1 point.
Square nerd = new Square(7);
System.out.println(nerd.side(0)); // 7 1 point.
System.out.println(nerd.side(1)); // 7 1 point.
System.out.println(nerd.side(2)); // 7 1 point.
System.out.println(nerd.side(3)); // 7 1 point.
System.out.println(nerd.area()); // 49 1 point.
System.out.println(nerd.perimeter()); // 28 1 point.
}
}
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