[leetcode] 108.Convert Sorted Array to Binary Search Tree
来源:互联网 发布:江苏三六五网络 编辑:程序博客网 时间:2024/05/17 01:25
题目:
Given an array where elements are sorted in ascending order, convert it to a height balanced BST.
题意:
给定一个升序的数组,转化为一个高度平衡的二叉搜索树。
思路:
这道题因为是转化为一个高度平衡的二叉搜索树,所以说比较简单,只要将当前数组的中间元素作为根,然后左边的元素是左子树,右边的元素是右子树,递归构建。
以上。
代码如下:
/** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; */class Solution {public: TreeNode* sortedArrayToBST(vector<int>& nums) { if(nums.size() == 0)return NULL; return buildBST(nums, 0, nums.size() - 1); } TreeNode* buildBST(vector<int>& nums,int start,int end) { if(start > end)return NULL; int index = (start + end)/2; TreeNode* root = new TreeNode(nums[index]); root->left = buildBST(nums,start,index - 1); root->right = buildBST(nums,index + 1, end); return root; }};
0 0
- LeetCode 108. Convert Sorted Array to Binary Search Tree
- [LeetCode]108.Convert Sorted Array to Binary Search Tree
- 108. Convert Sorted Array to Binary Search Tree Leetcode Python
- [Leetcode] 108. Convert Sorted Array to Binary Search Tree
- LeetCode --- 108. Convert Sorted Array to Binary Search Tree
- [leetcode] 108.Convert Sorted Array to Binary Search Tree
- LeetCode 108. Convert Sorted Array to Binary Search Tree
- 108. Convert Sorted Array to Binary Search Tree LeetCode
- [LeetCode]108. Convert Sorted Array to Binary Search Tree
- [LeetCode]108. Convert Sorted Array to Binary Search Tree
- [leetcode] 108. Convert Sorted Array to Binary Search Tree
- Leetcode 108. Convert Sorted Array to Binary Search Tree
- leetCode 108. Convert Sorted Array to Binary Search Tree JAVA
- LeetCode *** 108. Convert Sorted Array to Binary Search Tree
- leetcode 108. Convert Sorted Array to Binary Search Tree
- leetcode 108. Convert Sorted Array to Binary Search Tree
- LeetCode - 108. Convert Sorted Array to Binary Search Tree
- 【LeetCode】108. Convert Sorted Array to Binary Search Tree
- Java线程的生命周期
- Android水波纹效果
- Android Studio的常用快捷键
- App适配iPhone 6/ Plus和iOS 8:10条小秘诀
- POJ1127几何
- [leetcode] 108.Convert Sorted Array to Binary Search Tree
- 日经社説 20150701 成長と財政両立の宿題は山積みだ
- Hyper-V 高可用性 (创建虚拟机)
- 淘宝的尺码和颜色选择
- MQTT3.1与UDP时效性分析
- 为什么互联网企业热衷做智能硬件?
- android studio快捷键集合
- Java 集合框架
- 如何看待Java中的Import ???