a716121的专栏

Java： /** * Definition for binary tree * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */ import java.util.Arrays...

/** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */ class Solution { p...

/** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */ class Solution { p...

解题思路：拿到树的题目就递归，递归不了吃亏，递归不了上当。 /** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; }...

Java: 解题思路： 中序遍历的过程：先遍历树的左子树，再遍历根节点，最后再遍历右子树。所以最左节点是中序遍历的第一个节点。 void traverse(TreeNode root) { if (root == null) return; traverse(root.left); visit(root); traverse(root.right); }...

 Tree Grafting Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 2049   Accepted: 901 Description Trees have many applications in computer science. Perhaps

多文件组织： main.cpp: #include #include #include #include"btree.h" using namespace std; void CreateBTNode(BTNode *&b,char *str); BTNode *FindNode(BTNode *b,ElemType x); BTNode *LchildNode(BTNode *p); BT

btree.h #ifndef BTREE_H_INCLUDED #define BTREE_H_INCLUDED typedef char ElemType; #define MaxSize 101 typedef struct node { ElemType data; struct node *lchild; struct node *rchild; }BTNode

（1）计算二叉树节点个数； #include #include"btree.h" #include using namespace std; int Nodes(BTNode *b) { if(b==NULL) return 0; else return Nodes(b->lchild)+Nodes(b->rchild)+1; } int mai