MCQ Work

Key Topics to Focus on:
- ArrayLists
- Writing classes
- 2d Arrays

import java.util.*;
import java.util.Arrays;
class Item {
    public String name;
    public double price;

    public Item(String name, double price) {
        this.name = name;
        this.price = price;
    }
}
public class StoreInventorySystem {
    private static final int ROWS = 2;
    private static final int COLS = 2;
    private static Item[][] shelves = new Item[ROWS][COLS];
    private static ArrayList<Item> cart = new ArrayList<>();

    StoreInventorySystem(){
        setupStore();
        displayShelves();
        simulatePurchase();
        displayCart();
    }

    private static void setupStore() {
        shelves[0][0] = new Item("binary socks", 9.99);
        shelves[0][1] = new Item("code code code computer", 599.99);
        shelves[1][0] = new Item("code code code keyboard", 79.99);
        shelves[1][1] = new Item("Slack Pro", 12.99);
    }

    private static void displayShelves() {
        System.out.println("\nStore Shelves:");
        String[][] display = new String[ROWS][COLS];
        for (int i = 0; i < ROWS; i++) {
            for (int j = 0; j < COLS; j++) {
                display[i][j] = shelves[i][j].name;
            }
        }
        System.out.println(Arrays.deepToString(display));
    }

    private static void simulatePurchase() {
        cart.add(shelves[0][0]); // binary socks
        cart.add(shelves[1][1]); // Slack Pro
    }

    public static void displayCart() {
        System.out.println("\nShopping Cart:");
        double total = 0;
        for (Item item : cart) {
            System.out.println("- " + item.name + " ($" + item.price + ")");
            total += item.price;
        }
        System.out.println("Total: "+ total);
    }
}

StoreInventorySystem store= new StoreInventorySystem();
// store.displayCart();

Store Shelves:
[[binary socks, code code code computer], [code code code keyboard, Slack Pro]]

Shopping Cart:
- binary socks ($9.99)
- Slack Pro ($12.99)
Total: 22.98