package firstTest;

public class HelloWorld {

	public static void main(String[] args) {
		System.out.println("Hello world!");
		String[] langs;
		langs = new String[]{"C", "C++", "C#", "Python", "Go", "Rust", "JavaScript", "PHP", "Swift", "Java"};
		int n = randGenerate();
		n = calcN(n);
		n = digitSum(n);
		System.out.printf("Willy-nilly, this semester I will learn " );
		for(int i = 0; i < langs.length; i++) {
			System.out.printf("\"%s\" ",langs[i]);
		}

	}

	public static int randGenerate() {
		int n = (int) (Math.random() * 1_000_000);
		System.out.printf("n: %d\n", n);
		return n;

	}
	public static int calcN(int n) {
		n = n * 3;
		byte b = (byte) 10101;
		int h = 0xFF;
		n = n + (int) b + h;
		n = n * 6;
		System.out.printf("The new n: %d\n", n);
		return n;
	}

	public static int digitSum(int n) {
		int aux, sum;

		while(n > 9) {
			sum = 0;
			while(n != 0)
			{
				aux = n % 10;
				sum = sum + aux;
				n = n / 10;
			}
			n = sum;
		}

		System.out.printf("Sum of digits: %d\n", n);

		return n;
	}


}