package zadachitenavanina;

import java.util.Scanner;
import java.util.ArrayList;

public class zadachitenavanina {

    public static void problem_11() {
        Scanner input = new Scanner(System.in);
        System.out.println("Въведете число между 100 - 100000");
        int num = input.nextInt();
        if (num > 99 && num < 100001) {
            int sum = 0;
            while (num > 0) {
                int a = 0;
                a = num % 10;

                if (a == 1 || a == 3 || a == 5 || a == 7) {
                    sum += a;

                }
                num = num / 10;

            }
            System.out.println(sum);
        }
    }

    public static void problem_12() {
        int a = 20;
        while (a > 0) {
            System.out.println(a);
            a -= 1;
        }
    }

    public static void problem_13() {

    }

    public static void problem_14() {
        for (int i = 10; i > 0; i--) {
            System.out.println(i);
        }
    }

    public static void problem_15() {
        Scanner input = new Scanner(System.in);
        int num = input.nextInt();
        int max = 1;
        while(max < 100) {
            int a = max;
            if((max % num) == 0) {
                System.out.println(a);
            }
            max++;
        }

    }

    public static void problem_16() {
        int arr[] = new int[10];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = i;
            System.out.println(arr[i]);
        }

    }

    public static void problem_17() {
        Scanner input = new Scanner(System.in);
        int sum = 0;
        int[] array = new int[5];
        for (int i = 0; i < array.length; i++) {
            array[i] = input.nextInt();
        }

        for (int i = 0; i < array.length; i++) {
            sum += array[i];

        }
        System.out.println(sum);

    }

    public static void problem_18() {
        String[] days = { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday" };

        for (int i = 0; i < days.length; i++) {
            System.out.println(days[i]);
        }
    }

    public static void problem_19() {
        int arr[] = new int[10];
        for (int i = 1; i <= 10; i++) {
            arr[i - 1] = i;
            System.out.println(arr[i - 1]);
        }

    }

    public static void problem_20() {
        ArrayList<String> names = new ArrayList<String>();
        names.add("Ivan");
        names.add("Stefan");
        names.add("Milena");
        names.add("Aleks");
        names.add("Doroteq");
        names.add("Petar");
        System.out.println(names);
        names.remove(2);
        System.out.println(names);

    }

    public static void main(String[] args) {
         problem_11();
         problem_12();
         problem_13();
         problem_14();
         problem_15();
         problem_16();
         problem_17();
         problem_18();
         problem_19();
         problem_20();

    }

}