hn v5

 import java.util.Scanner;


 class HappyNumber
{

	static int squareSum(int n)
	{
		int sum  = 0;
		while (n != 0)
		{
			sum += (n % 10) * (n % 10);
			n /= 10;
		}

		return sum;
	}

	static int cruncher(int food)
	{
		int spit = 0;
		spit = squareSum(food);
		while (spit > 1)
		{
			spit = cruncher(spit);
		}

		return spit;
	}

	public static void main (String[] args)
	{
		int array[];
		array = new int[50];

		Scanner ui = new Scanner(System.in);
		int userNumber = 0;


		do
		{
			System.out.println("Please enter a positive integer.");
			while (!ui.hasNextInt())
			{
				System.out.println("Invalid input. Please enter a positive integer.");
				ui.next();
			}

		userNumber = ui.nextInt();

		}
		while (userNumber <= 0);




		array[0] = userNumber;

		System.out.println(array[0]);



	/*	int food = 0;

		while(food != 1)
		{
			int spit = 0;
			int i = 1;
			food = userNumber;

			spit = cruncher(food);

			array[i] = spit;

			System.out.println(array[i]);

			i++;

		}

		*/







		ui.close();

	}


}