you are at the root node of a binary tree.
this node contains the value int 2.
[[traverse left->2]]
[[traverse right->3]]you are at a binary tree node.
this node contains the value int 7.
[[traverse left->4]]
[[traverse right->5]]you are at a binary tree node.
this node contains the value int 9.
[[traverse right->6]]you are at a binary tree node.
this node contains the value int 2.you are at a binary tree node.
this node contains the value int 6.
[[traverse left->7]]
[[traverse right->8]]you are at a binary tree node.
this node contains the value int 9.
[[traverse left->9]]you are at a binary tree node.
this node contains the value int 11.you are at a binary tree node.
this node contains the value int 5.you are at a binary tree node.
this node contains the value int 4.