Java Taskbook Level 2.1
Given an array of integers:
int[] arr = {1, 2, 3, 4, 5};
Print the elements of this array to the console.
Given an array of strings:
String[] arr = {"ab", "cd", "ef"};
Print the first characters of the elements of this array to the console.
Given some integer:
int num = 12345;
Find the sum of all its even digits.
Given some integer:
byte num = 12;
Find the factorial of this number.
