剑指Offer23 二叉树中和为sum的路径

 /*************************************************************************
     > File Name: 23_FindPath.cpp
     > Author: Juntaran
     > Mail: [e-mail]
     > Created Time: 2016年08月30日 星期二 20时49分34秒
  ************************************************************************/

 #include <stdio.h>
 #include <stdlib.h>
 #include <bits/stdc++.h>

 using namespace std;

 // 二叉树结构体
 struct TreeNode
 {
     int val;
     TreeNode* left;
     TreeNode* right;
 };

 void FindPath(TreeNode* root, int sum);
 void FindPath(TreeNode* root, int sum, vector<int> &path, int currentSum);

 // 找到二叉树一条和为sum的路径
 void FindPath(TreeNode* root, int sum)
 {
     if (root == NULL)
         return;

     vector<int> path;
     int currentSum = ;
     FindPath(root, sum, path, currentSum);
 }

 void FindPath(TreeNode* root, int sum, vector<int> &path, int currentSum)
 {
     currentSum += root->val;
     path.push_back(root->val);

     // 如果走到叶子结点，和等于输入sum，输出
     if (root->left==NULL && root->right==NULL && currentSum==sum)
     {
         printf("Find:\n");
         vector<int>::iterator iter = path.begin();
         for (; iter != path.end(); ++iter)
             printf("%d\t", *iter);
         printf("\n");
     }

     // 如果不是叶子结点，继续遍历子结点
     if (root->left)
         FindPath(root->left, sum, path, currentSum);
     if (root->right)
         FindPath(root->right, sum, path, currentSum);

     // 查找失败删除该结点
     path.pop_back();
 }

 TreeNode* createTree()
 {
     TreeNode* root = (TreeNode*)malloc(sizeof(TreeNode));
     root->val = ;
     root->left = (TreeNode*)malloc(sizeof(TreeNode));
     root->left->val = ;
     root->right = (TreeNode*)malloc(sizeof(TreeNode));
     root->right->val = ;
     root->right->left = NULL;
     root->right->right = NULL;
     root->left->left = (TreeNode*)malloc(sizeof(TreeNode));
     root->left->left->val = ;
     root->left->left->left = NULL;
     root->left->left->right = NULL;
     root->left->right = (TreeNode*)malloc(sizeof(TreeNode));
     root->left->right->val = ;
     root->left->right->left = NULL;
     root->left->right->right = NULL;

     return root;
 }

 int main()
 {
     TreeNode* test = createTree();
     FindPath(test, );
 }