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<audio id="audio" title="春节7天练 | Day 5二叉树和堆" controls="" preload="none"><source id="mp3" src="https://static001.geekbang.org/resource/audio/31/5d/31ac1e889dcd87249425c641544b725d.mp3"></audio>
你好,我是王争。春节假期进入尾声了。你现在是否已经准备返回工作岗位了呢?今天更新的是测试题的第五篇,我们继续来复习。
## 关于二叉树和堆的7个必知必会的代码实现
### 二叉树
<li>
实现一个二叉查找树,并且支持插入、删除、查找操作
</li>
<li>
实现查找二叉查找树中某个节点的后继、前驱节点
</li>
<li>
实现二叉树前、中、后序以及按层遍历
</li>
### 堆
<li>
实现一个小顶堆、大顶堆、优先级队列
</li>
<li>
实现堆排序
</li>
<li>
利用优先级队列合并K个有序数组
</li>
<li>
求一组动态数据集合的最大Top K
</li>
## 对应的LeetCode练习题@Smallfly 整理)
- Invert Binary Tree翻转二叉树
英文版:[https://leetcode.com/problems/invert-binary-tree/](https://leetcode.com/problems/invert-binary-tree/)
中文版:[https://leetcode-cn.com/problems/invert-binary-tree/](https://leetcode-cn.com/problems/invert-binary-tree/)
- Maximum Depth of Binary Tree二叉树的最大深度
英文版:[https://leetcode.com/problems/maximum-depth-of-binary-tree/](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
中文版:[https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/](https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/)
- Validate Binary Search Tree验证二叉查找树
英文版:[https://leetcode.com/problems/validate-binary-search-tree/](https://leetcode.com/problems/validate-binary-search-tree/)
中文版:[https://leetcode-cn.com/problems/validate-binary-search-tree/](https://leetcode-cn.com/problems/validate-binary-search-tree/)
- Path Sum路径总和
英文版:[https://leetcode.com/problems/path-sum/](https://leetcode.com/problems/path-sum/)
中文版:[https://leetcode-cn.com/problems/path-sum/](https://leetcode-cn.com/problems/path-sum/)
做完题目之后,你可以点击“请朋友读”,把测试题分享给你的朋友。
祝你取得好成绩!明天见!