Question

In Java:

A company manufactures 5 different devices and each device is built using a varying amount of 7 different components. Each device and its required amount of components is listed in the table below.

	Components
	1	2	3	4	5	6	7
MP3 Player	9	13	4	7	1	14	10
Smart Phone	8	2	12	11	6	15	2
Digital Watch	9	6	7	10	15	8	3
Tablet	12	14	8	15	2	7	8
Portable Gaming System	12	10	3	11	8	3	5

Each component has an individual cost which is listed in the table below.

	Components
	1	2	3	4	5	6	7
Cost	$10.75	$15.27	$5.98	$9.67	$4.32	$12.50	$1.42

Using the information in the tables, your program will calculate some data about the products.

Populating the Data:

Your program will have three arrays:

A 2D array to store the data of the first table

A 1D array to store the names of each product

A 1D array to store the costs of each component.

Practice getting the data into your program in these ways:

Console input with Scanner

File I/O

Using an Initializer List.

Calculations:

Compute and Display the cost of manufacturing each device.

Compute and Display the Device name with the highest cost.

Compute and Display the Device name with the lowest cost.

Practice other calculations as you see fit, i.e. Average number of components per device, Device with the highest / lowest number of components, etc, etc.

Sample Results:

MP3 Player Cost:             $580.39
Smart Phone Cost:            $510.93
Digital Watch Cost:          $495.99
Tablet Cost:                 $643.17
Portable Gaming System Cost: $485.17

Highest Cost Device:   Tablet
Lowest Cost Device:    Portable Gaming System

Answer 1

code:

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import java.lang.Math; // headers MUST be above the first class
import java.util.Scanner; ;
// one class needs to have a main() method
public class HelloWorld
{
// arguments are passed using the text field below this editor
public static void main(String[] args)
{
double[][] comp = new double[5][7] ;
String[] devices = new String[5];
double[] cost = new double[7];
System.out.println("enter componenents info");
int i=0;
int j=7;
Scanner sc=new Scanner(System.in);
for(i=0;i<5;i++)
{
for(j=0;j<7;j++)
{
comp[i][j]=sc.nextDouble();
}
}
System.out.println("enter products info");
for(i=0;i<5;i++)
devices[i]=sc.next();
System.out.println("enter component cost info");
for(i=0;i<7;i++)
cost[i]=sc.nextDouble();
double[] man_cost = new double[5];
int high=0;
int low=0;
for(i=0;i<5;i++)
{
man_cost[i]=0;
for(j=0;j<7;j++)
{
man_cost[i]+=man_cost[i]+(comp[i][j]*cost[j]);
}
if(man_cost[i]>high)
high=i;
if(man_cost[i]<low)
low=i;
}
for(i=0;i<5;i++)
{
System.out.println("device name: "+devices[i]);
System.out.println("cost: "+man_cost[i]);
}
System.out.println("highest cost device: "+ devices[high]);
System.out.println("lowest cost device: "+ devices[low]);
  
}
}

// you can add other public classes to this editor in any order