public class assign4main {

	public static void main(String[] args){
		data front = fillArray();       //fills array with 0-9 and returns front
		data current = null;
		printArray(front);
		System.out.println(findTail(front).iNum + " Is the tail");
		addTail(front, 11);
		System.out.println(findTail(front).iNum + " Is the tail");


		front = addFront(front, 14);
		printArray(front);
	}



	static data addFront(data front, int n){
		data newFront = makeNewNode(n);
		newFront.next = front;
		return newFront;

	}

	static void addTail(data front, int n){

		findTail(front).next = makeNewNode(n);
	}


	static data findTail(data front){
		data tail = front;
		while(tail.next !=null){
			tail = tail.next;
		}


		return tail;

	}

	static void printArray(data front){
		data current;

		current = front;
		while(current != null){
			System.out.println(current.iNum);
			current = current.next;
		}
	}

	static data fillArray(){
		data current = null;
		data front= null;
		for(int i = 0 ; i < 10; i++){
			if (i == 0){
				front = makeNewNode(i);
				current = front;
			} else {

				current.next = makeNewNode(i);
				current = current.next;
			}
		}
		return front;
	}

	static data makeNewNode(int n){
		data newNode;
		newNode = new data();
		newNode.iNum = n;
		return newNode;
	}
}