id bstTree::createSmallBst$()\{$

root $=$ new Node$(50)$;

root$->$right $=$ new Node$(100)$;

root$->$left $=$ new Node$(20)$;

root$->$left$->$left $=$ new Node$(7)$;

root$->$left$->$left$->$right $=$ new Node$(8)$;

$\}$