Plant Discovery

package Advance.Exams.FinalExams;

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

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


        int rotation = Integer.parseInt(scanner.nextLine());
        LinkedHashMap<String, Integer> plantsRarity = new LinkedHashMap<>();
        LinkedHashMap<String, Double> plantsRating = new LinkedHashMap<>();
        LinkedHashMap<String, Integer> averageCounter = new LinkedHashMap<>();

        for (int i = 1; i <= rotation; i++) {
            String[] input = scanner.nextLine().split("<->");
            String name = input[0];
            int rarity = Integer.parseInt(input[1]);


            plantsRarity.put(name, rarity);
            plantsRating.put(name, 0.0);
            averageCounter.put(name, 0);
        }

        String command = scanner.nextLine();
        while (!command.equals("Exhibition")) {
            String[] commandArr = command.split(": | - ");
            String plant = commandArr[1];

            if (plantsRarity.containsKey(plant)) {
                if (command.contains("Rate")) {

                    double currentRating = plantsRating.get(plant);
                    double newRating = Double.parseDouble(commandArr[2]);
                    plantsRating.put(plant, currentRating + newRating);
                    averageCounter.put(plant, averageCounter.get(plant) + 1);


                } else if (command.contains("Update")) {

                    int newRarity = Integer.parseInt(commandArr[2]);
                    plantsRarity.put(plant, newRarity);


                } else if (command.contains("Reset")) {


                    plantsRating.put(plant, 0.0);

                }
            } else {
                System.out.println("error");
            }


            command = scanner.nextLine();
        }

        System.out.println("Plants for the exhibition:");
        for (Map.Entry<String, Integer> item : plantsRarity.entrySet()) {
            double average = plantsRating.get(item.getKey()) / averageCounter.get(item.getKey());
            System.out.printf("- %s; Rarity: %d; Rating: %.2f%n", item.getKey(), item.getValue(), average);
        }


    }
}