(self, curr_node)
| 161 | self.preShow(curr_node.right) |
| 162 | |
| 163 | def preorder(self, curr_node): |
| 164 | if curr_node is not None: |
| 165 | self.preShow(curr_node.left) |
| 166 | self.preShow(curr_node.right) |
| 167 | print(curr_node.label, end=" ") |
| 168 | |
| 169 | def getRoot(self): |
| 170 | return self.root |