class Node { public Node left; public Node right; public int data; Node(int newData) { left = null; right = null; data = newData; } }
void preorder(Node node);
这道题你会答吗?花几分钟告诉大家答案吧!
扫描二维码,关注牛客网
下载牛客APP,随时随地刷题