public BSTNode<T> createMirrorImage(BSTNode<T> originalNode,BSTNode<T> mirroredNode){

	    mirroredNode.setData(originalNode.getData());

	    if(originalNode.getLeft() != null){
	    	mirroredNode.setLeft(originalNode.getRight());
	    }

	    if(originalNode.getRight() != null){
	        mirroredNode.setRight(originalNode.getLeft());
	    }

	    return mirroredNode;

	}

	public BSTNode<T> mirrorBinaryTreeIterative(BSTNode<T> root){
	    if(root == null || (root.getLeft() == null && root.getRight() == null))
	        return root;

	    BSTNode<T> parent = root;
	    Stack<BSTNode<T>> treeStack = new Stack<BSTNode<T>>();
	    treeStack.push(root);

	    while(!treeStack.empty()){
	        parent = treeStack.pop();

	        BSTNode<T> temp = (BSTNode<T>)parent.getRight();
	        parent.setRight(parent.getLeft());
	        parent.setLeft(temp);

	        if((BSTNode<T>)parent.getRight() != null)
	            treeStack.push((BSTNode<T>)parent.getRight());
	        if(parent.getLeft() != null)
	            treeStack.push((BSTNode<T>)parent.getLeft());
	    }
	    return root;
	}