Home work #2

Ex1

import java.util.Scanner;

public class Ex1 {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        System.out.print("Введіть додатне число = ");
        int a = in.nextInt();

        if ( a % 2 == 0 ) System.out.println("even");
        else System.out.println("odd");
    }
}

Ex2

public class Ex2 {
    public static void main(String[] args) {
        final int COUNT = 10;
        for (int i = 0; i < COUNT; i++) {
            System.out.println("I will adopt best practices");
        }
    }
}

Ex3

public class Ex3 {
    public static void main(String[] args) {
        int a = 10;

        do {
            if (a != 1) System.out.print(a + ", ");
            else System.out.print(a);
            --a;
        }while (a > 0);
    }
}

Ex4

public class Ex4 {
    public static void main(String[] args) {
        System.out.print("{ ");

        for (int i = 0; i <= 20; i++) {
            if (i < 20) System.out.print(i + ", ");
            else System.out.print(i + " }");
        }
    }
}

Ex5

import java.util.Scanner;

public class Ex5 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        System.out.print("Ввадіть преше число: ");
        int first = in.nextInt();

        System.out.print("Введіть друге число: ");
        int second = in.nextInt();

        for (int i = 1; i <= second ; i++) {
            if ( i % first == 0 ) System.out.println(i);
        }
    }
}

Ex6

public class Ex6 {
    public static void main(String[] args) {
        int j = 0;

        do {

            for (int i = 1; i <= 9; i++) {

                for (int k = 1; k <= 9; k++) {
                    System.out.println(i + "*" + k + "=" + (i*k));
                }

                System.out.println();
                ++j;
            }

        } while( j <= 9);
    }
}

Ex7

import java.util.Scanner;

public class Ex7 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        System.out.print("Введіть додатне число = ");
        int count = in.nextInt();

        int sum = 0;
        for (int i = 1; i <= count; i++) {
            sum = sum + i;

            if (count > i) System.out.print(i + "+");
            else System.out.print(i);
        }
        System.out.print("=" + sum);
    }
}