package raptor;
 
import java.util.Stack;
 
public class test2 {
 
	static Stack<Integer> stack = new Stack<Integer>();
	public static void main(String args[]) {
		System.out.println(whoKnows(5));
	}
 
	static int whoKnows(int n) {
		System.out.println("Winding stack");
 
		for (int i = n; i > 0; i--) {
			System.out.println("Pushing " + i + " onto the stack.");
			stack.push(i);
		}
 
		System.out.println("Unwinding stack");
 
		int result = 0;
		while(!stack.empty()) {
            int value = stack.pop();
			System.out.println("Popped " + value + " from the stack.");
			result += value;
		}
 
		System.out.println("The answer is " + result);
 
		return result;
	}
 
 
}