public static boolean transTree(TreeNode parent,TreeNode children){
		if(parent == null && children == null){
			return true;
		}
		else if(parent == null){
			return false;
		}
		else if(children == null){
			return false;
		}
		else{
			if(parent.data == children.data){
				return isChildrenTree(parent,children);
			}else{
				return transTree(parent.left,children) || transTree(parent.right,children);
			}
		}
	}