ExamPrep - FeedTheAnimals

package com.company;


import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

public class Main {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        String input = scanner.nextLine();

        HashMap<String,Integer>nameAndFoodLimit=new LinkedHashMap<>();
        HashMap<String,Integer>areaAndCountAnimals=new LinkedHashMap<>();

        while (!input.equals("Last Info")){
            String [] tokens=input.split(":");
            String command=tokens[0];
            String name=tokens[1];
            int dailyFoodLimit=Integer.parseInt(tokens[2]);
            String area=tokens[3];

            if(command.equals("Add")){

                if(!nameAndFoodLimit.containsKey(name)){
                    nameAndFoodLimit.put(name,dailyFoodLimit);
                }else{
                    Integer foodLimit = nameAndFoodLimit.get(name);
                    int limitCurrent = foodLimit + dailyFoodLimit;
                    nameAndFoodLimit.put(name,limitCurrent);
                    if(!areaAndCountAnimals.containsKey(area)){
                        areaAndCountAnimals.put(area,1);
                    }else{
                        Integer countAnimals = areaAndCountAnimals.get(area);
                        areaAndCountAnimals.put(area,countAnimals+1);

                    }
                }





            }else if(command.equals("Feed")){
                if(nameAndFoodLimit.containsKey(name)){
                Integer limit = nameAndFoodLimit.get(name);
                int leftFood = limit - dailyFoodLimit;



                    if(leftFood<=0){
                        nameAndFoodLimit.remove(name);
                        System.out.println(name+" was successfully fed");


                            Integer count = areaAndCountAnimals.get(name);
                            areaAndCountAnimals.put(name,count-1);





                    }else{
                        nameAndFoodLimit.put(name, leftFood);
                    }


                }

            }




            input=scanner.nextLine();
        }
        System.out.println("Animals:");
        nameAndFoodLimit.entrySet().stream()
                .sorted((f,s)->{//тук в descending order искаме да сравним Value
                    int result = s.getValue().compareTo(f.getValue());
                    if(result==0){//ако по първи параметър (Value) са равни като сравним, тогава по (Key) ascending order
                       result= f.getKey().compareTo(s.getKey());
                    }
                    return result;
                })
                .forEach(entry->
                        System.out.printf("%s -> %dg%n",entry.getKey(),entry.getValue()));
        System.out.println();


        System.out.println("Areas with hungry animals:");

       areaAndCountAnimals.entrySet()
               .stream()
               .filter(entry->entry.getValue()>0)// entry отива в getValue и тук проверяваме дали е нахранено животното
               .sorted((f,s)-> s.getValue().compareTo(f.getValue()))//подреждаме в descending order
               .forEach(entry->{
                   System.out.printf("%s : %d%n",entry.getKey(),entry.getValue());
               });


    }
}