//Exercise 6-1

package com.mycompany.countdown;

public class Countdown {

    public static void main(String[] args) {
        
        //part 1
        for (int i = 0; i <= 5; i++) {
        System.out.println("" + i);
        }
        
        System.out.println("");
        
        //part 2
        for (int i = 0; i <= 20; i++) {
            
        int evenorodd = i%2;
        if (evenorodd == 0) {
            System.out.println("" + i);
        }
        }
    }
}