import java.util.Stack;
import java.util.Random;

public class TP2E03 {

	public static void main(String[] args) {
		TP2E03 excercise = new TP2E03();
		excercise.execute();
	}
	
	private void execute() {
		Stack<Integer> myStack1 = new Stack<Integer>();
		Stack<Integer> myStack2 = new Stack<Integer>();
		Random random = new Random();

		for (int max = random.nextInt(10) + 1; max > 0; max--) {
			myStack1.push(random.nextInt(100));
		}

		for (int max = random.nextInt(10) + 1; max > 0; max--) {
			myStack2.push(random.nextInt(100));
		}
		
		System.out.println("Pila 1 " + myStack1.toString());
		System.out.println("Pila 2 " + myStack2.toString());
		
		System.out.println("Union  " + Union(myStack1, myStack2));
		
		System.out.println("Pila 1 " + myStack1.toString());
		System.out.println("Pila 2 " + myStack2.toString());
		
	}
	
	
	private Stack<Integer> Union(Stack<Integer> stack1, Stack<Integer> stack2) {
		Stack<Integer> result = new Stack<Integer>();

		Integer[] data = new Integer[stack1.size()];
		stack1.toArray(data);
		for (int i = 0; i < data.length; i++) {
			result.push(data[i]);
		}
		
		data = new Integer[stack2.size()];
		stack2.toArray(data);
		for (int i = 0; i < data.length; i++) {
			result.push(data[i]);
		}
		
		return result;
	}

}