CheetSheetCollections

import java.math.BigDecimal;
import java.math.BigInteger;
import java.text.DecimalFormat;
import java.util.*;
import java.util.stream.Collectors;

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

        String[] array = new String[2];
        Collections.reverse(Arrays.asList(array));

        Arrays.sort(array);                       // Sorts arr[] in ascending order
        System.out.println("Modified arr[] : " + Arrays.toString(array));

        Arrays.sort(array, Collections.reverseOrder());     // Sorts arr[] in descending order

        System.out.print(array.toString().replace("[", "").replace("]", "")
                .trim().replaceAll(",", "").replaceAll("\\s+", " "));

        int[] arr = new int[2];
        int number  = Integer.parseInt(Arrays.toString(arr).replaceAll("[\\[\\], ]", ""));

        List<Integer> list = new ArrayList<Integer>();
        Collections.sort(list);
        Collections.sort(list, Collections.reverseOrder());
        System.out.println(list.stream().map(String::valueOf).collect(Collectors.joining(" ")));
        System.out.println(String.join(" ", list.stream().map(String::valueOf).collect(Collectors.toList())));
        System.out.println(list.toString().replaceAll("[\\[\\],]", ""));
        System.out.println(String.join(System.lineSeparator(), array));

        int one = 1;
        System.out.printf("%03d", one);   /// 001

        double n = Double.parseDouble(scanner.nextLine());
        System.out.print(new DecimalFormat("0.####").format(n)+ " ");
//0003.147896325
        DecimalFormat decimalFormat = new DecimalFormat("#0.00");
        DecimalFormat decFormat = new DecimalFormat("#.#####");
        DecimalFormat deciFormat = new DecimalFormat("##.00");
        DecimalFormat result1 = new DecimalFormat("0.##");


            Map<String, List<Integer>> companyList = new LinkedHashMap<>();
            companyList.entrySet().stream().forEach(company -> {System.out.println(company.getKey());
            company.getValue().forEach(employee -> System.out.println("-- " + employee));});

            Map<String, Integer> mapList = new LinkedHashMap<>();
            mapList.entrySet().forEach(entry -> System.out.println(entry.getKey() + ": " + entry.getValue()));

            Map<String, Integer> topThree =
                mapList.entrySet().stream()
                        .sorted(Map.Entry.comparingByValue(Comparator.reverseOrder()))
                        .limit(3)
                        .collect(Collectors.toMap(
                                Map.Entry::getKey, Map.Entry::getValue, (e1, e2) -> e1, LinkedHashMap::new));

//        bestCandidate.entrySet().stream().sorted(Map.Entry.comparingByValue(Comparator.reverseOrder())).limit(1)
//                .forEach(entry -> System.out.printf("Best candidate is %s with total %d points.\n", entry.getKey(), entry.getValue()));

            List<String> sortedPlayers = new ArrayList<>();
            mapList.entrySet().stream().sorted(Map.Entry.comparingByValue()).forEach(a -> sortedPlayers.add(a.getKey()));
            Collections.reverse(sortedPlayers);

            List<StringBuilder> SBlist = new ArrayList<>();
        Collections.sort(SBlist, new Comparator<StringBuilder>() {
            @Override
            public int compare(StringBuilder o1, StringBuilder o2) {
                return (o1).compareTo(o2);
            }
        });

//        String output = arraylist. toString(). replaceAll(“(^\\[|\\]$)”, “”);
//        first we are removing first square bracket then we are removing the second square bracket
//        and replacing i with empty string.


        int m = Integer.parseInt(scanner.nextLine());
        BigInteger bigInt = new BigInteger(String.valueOf(1));
//        при m = 5, String.valueOf(m) и в multiply String.valueOf(6) result 5 * 6(на 6-та)
        for (int i = 1; i <= m ; i++) {
            bigInt = bigInt.multiply(BigInteger.valueOf(Integer.parseInt(String.valueOf(i))));
        }
//            bigInt = bigInt.multiply(BigInteger.valueOf(Integer.parseInt(String.valueOf(6)))); 6 на степен m

            BigDecimal sum = new BigDecimal("0");
            String num = scanner.nextLine();
            BigDecimal bdNUm = new BigDecimal(num);
            sum = sum.add(bdNUm);

//        employeeList.sort(Comparator.comparing(CompanyRoster.Employee::getSalary).reversed());
//        peopleList.sort(Comparator.comparing(OrderByAge.People::getAge));
//        System.out.println(team.getUser().stream().collect(Collectors.joining(System.lineSeparator())));

    }
}