Question

Design and implement an application file that does the following:

• uses a 2 dimensional array to store the sales data(see sample data and output below)

• uses 1 dimensional arrays for the following:

o hold the names of the stores

o hold the names of the months

o hold the total sales for each store (city)

o hold the monthly totals

• creates and calls 4 methods that perform the following tasks:

o initializes these arrays using initialization lists: 2D array with all the sales data (but not the totals), store (city) names, month names

o calculates the total sales for each city (and declares the size of this array)

o calculates the monthly totals (and declares the size of this array)

o prints out the results (see the sample output below). If you want help getting the output to line up, use printf (or ask you instructor about printf)

Sample Data:

This is a sample data set. The code you write must work for ANY data set.

Chilliwack

Kamloops

Kelowna

Nanaimo

Surrey

Vancouver

Victoria

400 500 500 600 500 600

600 800 800 800 900 900

700 700 700 900 900 1000

500 600 700 800 700 700

800 700 800 700 900 800

1000 1100 1200 1300 1400 1400

900 900 900 1000 1100 1100

Output:

Store ​​​ Monthly Sales​ Store

Location​​ (thousands of $)​​Totals

​​ Jan​ Feb Mar Apr May Jun​

Chilliwack 400 500 500 600 500 600 3100

Kamloops​ 600 800 800 800 900 900 4800

Kelowna​ 700 700 700 900 900 1000 4900

Nanaimo​ 500 600 700 800 700 700 4000

Surrey​​ 800 700 800 700 900 800 4700

Vancouver​ 1000 1100 1200 1300 1400 1400 7400

Victoria​ 900 900 900 1000 1100 1100 5900

Month Totals​ 4900 5300 5600 6100 6400 6500 34800

Answer 1

Code:

public class SalesApp {

private String[] storeNames;

private String[] months = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};

private int[] totalSales;

private int[] monthlyTotals;

private int[][] salesData;

public void initialize(String[] stores,int[][] sales) {

storeNames = stores;

salesData = sales;

}

public void totalSales() {

totalSales = new int[salesData.length];

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

totalSales[i] = 0;

for(int j=0;j<salesData[i].length;j++) {

totalSales[i] = totalSales[i] + salesData[i][j];

}

}

}

public void monthlyTotals() {

int rows = salesData.length;

int cols = salesData[0].length;

monthlyTotals = new int[cols];

for(int i=0;i<cols;i++) {

monthlyTotals[i] = 0;

for(int j=0;j<rows;j++) {

monthlyTotals[i] = monthlyTotals[i] + salesData[j][i];

}

}

}

public void printData() {

System.out.println("Store Location || Monthly Sales || Total Sales ");

System.out.print(" ");

for(int i=0;i<salesData[0].length;i++) {

System.out.print(months[i]+" ");

}

System.out.println();

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

System.out.print(storeNames[i] + " ");

for(int j=0;j<salesData[0].length;j++) {

System.out.print(salesData[i][j] + " ");

}

System.out.println(" || "+totalSales[i]);

}

System.out.print("Month Totals || ");

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

System.out.print(monthlyTotals[i]+" ");

}

System.out.println();

}

public static void main(String[] args) {

String[] stores = {"Chilliwack","Kamloops","Kelowna","Nanaimo","Surrey","Vancouver","Victoria"};

int[][] sales = {

{400,500,500,600,500,600},

{600,800,800,800,900,900},

{700,700,700,900,900,1000},

{500,600,700,800,700,700},

{800,700,800,700,900,800},

{1000,1100,1200,1300,1400,1400},

{900,900,900,1000,1100,1100},

};

SalesApp app = new SalesApp();

app.initialize(stores, sales);

app.totalSales();

app.monthlyTotals();

app.printData();

}

}

Output:

Store Location || Monthly Sales || Total Sales

Jan Feb Mar Apr May Jun

Chilliwack 400 500 500 600 500 600 || 3100

Kamloops 600 800 800 800 900 900 || 4800

Kelowna 700 700 700 900 900 1000 || 4900

Nanaimo 500 600 700 800 700 700 || 4000

Surrey 800 700 800 700 900 800 || 4700

Vancouver 1000 1100 1200 1300 1400 1400 || 7400

Victoria 900 900 900 1000 1100 1100 || 5900

Month Totals || 4900 5300 5600 6100 6400 6500