zengzhaojin

摘要： # 树 ## ch01二叉树 ### ch01_01二叉树的定义 ``` struct node { typename data; node* lchild; node* rchild; }; node* root=NULL; node* newNode(int v) { node* Node=new node; Node->data=v; Node->lchild=Node->rchild=NU 阅读全文

摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805458722734080 阅读全文