Question

A block of flats has 27 floors with ten flats on each floor. Each flat has six rooms. Find and print the following: The total area for each flat (print this value and the floor and flat numbers). The total area for each floor (to be stored in a one-dimensional array and printed at the end of processing). Print the contents of this array with the respective floor numbers. The total area for the building. The area of each room must be loaded into the array.

Answer 1

package HomeworkLib1;

public class Room{
        int area;
        Room(int area){ 
                super();
                this.area = area;
        }
}

package HomeworkLib1;

public class Flat {
        Room[] rooms;
        int flatNo;
        int area;
        Flat(int j){
                this.flatNo = j;
                rooms = new Room[6];
                for(int i=0; i<rooms.length; i++) {
                        rooms[i] = new Room(4*i+6);                     //populating some values
                }
                this.area = 0;
                for(int i=0; i<rooms.length; i++)
                        this.area += rooms[i].area;
        }
}


package HomeworkLib1;

public class Floor {
        Flat[] flats;
        int floorNo;
        int area;
        Floor(int x){
                this.floorNo = x;
                flats = new Flat[10];
                for(int i=0; i<flats.length; i++) {
                        flats[i] = new Flat(this.floorNo*10 + (i+1));
                }
                this.area = 0;
                for(int i=0; i<flats.length; i++)
                        this.area += flats[i].area;
        }
}


package HomeworkLib1;

public class Building {
        Floor[] floors;
        int area;
        Building(){
                floors = new Floor[27];
                for(int i=0; i<floors.length; i++) {
                        floors[i] = new Floor(i+1);
                }
                this.area = 0;
                for(int i=0; i<floors.length; i++)
                        this.area += floors[i].area;
        }
        public static void main(String[] args) {
                Building b = new Building();
                for(int i=0; i<b.floors.length; i++) {
                        System.out.println("Floor no: " + b.floors[i].floorNo + " Area: " + b.floors[i].area);
                }
                System.out.println("Total area: " + b.area);
        }

}