using Java, create a virtual shopping store. using the two txt files (items and sale), display a list of items, price and if on sale. have the user select what items they want until they press 'q' to quit. show list of what they purchased, add the total and how much they saved. class BillProcessor { public static void prepareBill(LinkedHashMap purchases, LinkedHashMap items, LinkedHashMap sales, ArrayList itemNames) { total cost = 0 total discount = 0 for each item in purchases: compute the regular cost if item is subject to a sale (i.e. it appears in the sales lhm) determine the sales price if it's bogo - mod operator and the int/int if it's not bogo - apply the discount price compute the actual cost based on that total cost = total cost + actual cost total disc = total disc + discount print a line formatted like the example that summarizes the purchase of that item print the summary } } public class KlumpGroceryStore { private static LinkedHashMap items; // storage for the items and their costs private static LinkedHashMap sales; // storage for the itema and their sale descriptions private static LinkedHashMap purchases; // storage for the items and their quantities private static ArrayList itemNames; public static LinkedHashMap readItemsFromFile(String fname) { LinkedHashMap result = new LinkedHashMap(); itemNames = new ArrayList(); open up the file for each line of the file split it into its two parts at the tab result.put(item name, the price you read for it) itemNames.add(the item name you read) close the file Collections.sort(itemNames); return the result } public static LinkedHashMap readSalesFromFile(String fname) { LinkedHashMap result = new LinkedHashMap(); open the file for each line of the file split it at the tab result.put(item name, the sales description) close the file return the result } public static void presentMenuOfItems() { for each itemName in itemNames: print itemName along with items[itemName] and a description based on sales[itemName] add on the "q" to quit option } public static void main(String[] args) { items = readitemsFromFile("items.txt"); sales = readSalesFromFile("sales.txt"); purchases = new LinkedHashMap(); present to the user the table of grocery items do { ask them to the choice use the number and the itemNames to figure out the name of the item if the purchases lhm already has that item purchases[the item name] = purchases[the item name] + 1 else purchases[the item name] = 1; // first time purchase of that item } while they don't want to quit BillProcessor.prepareBill(purchases, items, sales, itemNames); }
using Java, create a virtual shopping store. using the two txt files (items and sale), display a list of items, price and if on sale. have the user select what items they want until they press 'q' to quit. show list of what they purchased, add the total and how much they saved.
class BillProcessor {
public static void prepareBill(LinkedHashMap<String, Integer> purchases, LinkedHashMap<String,Double>
items, LinkedHashMap<String,String> sales, ArrayList<String> itemNames) {
total cost = 0
total discount = 0
for each item in purchases:
compute the regular cost
if item is subject to a sale (i.e. it appears in the sales lhm)
determine the sales price
if it's bogo - mod operator and the int/int
if it's not bogo - apply the discount price
compute the actual cost based on that
total cost = total cost + actual cost
total disc = total disc + discount
print a line formatted like the example that summarizes the purchase of that item
print the summary
}
}
public class KlumpGroceryStore {
private static LinkedHashMap<String, Double> items; // storage for the items and their costs
private static LinkedHashMap<String, String> sales; // storage for the itema and their sale descriptions
private static LinkedHashMap<String, Integer> purchases; // storage for the items and their quantities
private static ArrayList<String> itemNames;
public static LinkedHashMap<String,Double> readItemsFromFile(String fname) {
LinkedHashMap<String,Double> result = new LinkedHashMap<String,Double>();
itemNames = new ArrayList<String>();
open up the file
for each line of the file
split it into its two parts at the tab
result.put(item name, the price you read for it)
itemNames.add(the item name you read)
close the file
Collections.sort(itemNames);
return the result
}
public static LinkedHashMap<String, String> readSalesFromFile(String fname) {
LinkedHashMap<String,String> result = new LinkedHashMap<String,String>();
open the file
for each line of the file
split it at the tab
result.put(item name, the sales description)
close the file
return the result
}
public static void presentMenuOfItems() {
for each itemName in itemNames:
print itemName along with items[itemName] and a description based on sales[itemName]
add on the "q" to quit option
}
public static void main(String[] args) {
items = readitemsFromFile("items.txt");
sales = readSalesFromFile("sales.txt");
purchases = new LinkedHashMap<String,Integer>();
present to the user the table of grocery items
do {
ask them to the choice
use the number and the itemNames to figure out the name of the item
if the purchases lhm already has that item
purchases[the item name] = purchases[the item name] + 1
else
purchases[the item name] = 1; // first time purchase of that item
} while they don't want to quit
BillProcessor.prepareBill(purchases, items, sales, itemNames);
}
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