c++ - 按顺序复制二叉树

我到目前为止编写的代码是:

void copyInOrder(TNode *orgTree, Tnode *& copyTree){
    if(orgTree !=NULL){
        copyInOrder(orgTree->left_link);
        //create leftmost node of tree but how to link to parent
        copyInOrder(orgTree->right_link);
    }
}

我不知道如何链接到父节点的顺序。

最佳答案

我想那会是这样。

void copyInOrder(TNode *orgTree, Tnode *& copyTree){
    if(orgTree !=NULL){
        //left side
        TNode newLeftNode = cloneNode(orgTree->left_link);
        copyTree->left_link = newLeftNode;
        copyInOrder(orgTree->left_link, copyTree->left_link);

        //right side
        TNode newRightNode = cloneNode(orgTree->right_link);
        copyTree->right_link = newRightNode;
        copyInOrder(orgTree->right_link, copyTree->right_link);
    }
}