JF-Maps-Exercise-04.Orders

package com.company;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class Orders {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        LinkedHashMap<String, Integer> productsQuantity = new LinkedHashMap<>();
        LinkedHashMap<String, Double> productsPrice = new LinkedHashMap<>();

        String input = sc.nextLine();

        while (!input.equals("buy")) {

            String[] tokens = input.split("\\s+");
            String product = tokens[0];
            double price = Double.parseDouble(tokens[1]);
            int quantity = Integer.parseInt(tokens[2]);

            if (!productsQuantity.containsKey(product)) {
                productsQuantity.put(product, quantity);
                productsPrice.put(product, price);
            } else {
                int currQuantity = productsQuantity.get(product);
                productsQuantity.put(product, currQuantity + quantity);

                if (productsPrice.get(product) - price !=0) {
                    productsPrice.put(product, price);
                }
            }

            input= sc.nextLine();
        }
        for (Map.Entry<String, Integer> entry : productsQuantity.entrySet()) {
            double price = productsPrice.get(entry.getKey());
            System.out.printf("%s -> %.2f%n", entry.getKey(), entry.getValue() * price );

        }

    }
}