实验描述：树的前序遍历和中序遍历结果可以确定一棵树。 输入树的前序遍历结果和中序遍历结果建立起这棵树并给出后序遍历结果。 -Experimental Descr iption: Preorder tree traversal and traversal in order to determine the outcome of a tree. Enter the tree traversal Preorder traversal of the results and the results