（算法）Binary Tree Max Path Sum

题目：

Given a binary tree, find the maximum path sum.

For this problem, a path is defined as any sequence of nodes from some starting node to any node in the tree along the parent-child connections. The path does not need to go through the root.

For example:
Given the below binary tree,

Return 6.

思路：

递归

代码：

#include<iostream>

#include<stdlib.h>

using namespace std;

struct TreeNode{

    int val;

    TreeNode* left;

    TreeNode* right;

};

int maxPathSum(TreeNode *root,int &maxDist){

    if(root==NULL)

        return ;

    int lmax=maxPathSum(root->left,maxDist);

    int rmax=maxPathSum(root->right,maxDist);

    if(lmax+rmax+root->val>maxDist)

        maxDist=lmax+rmax+root->val;

    return max(,root->val+max(lmax,rmax));

}

int main(){

    return ;

}

巴特西

（算法）Binary Tree Max Path Sum

题目：

思路：

代码：

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