文件: root - text - article - 2019 - 11 - validate-binary-search-tree.txt.txt
标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 主页 | 类别: 计算机科学 | 205 次阅读, 14922 次搜索 | 128 个单词
| 浏览 | 博客存档
![定阅此目录的博客 定阅此目录的博客](/images/form/rss.gif)
标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 主页 | 类别: 计算机科学 | 205 次阅读, 14922 次搜索 | 128 个单词
![定阅此目录的博客 定阅此目录的博客](/images/form/rss.gif)
Hi, here's your problem today. This problem was recently asked by Facebook:
You are given the root of a binary search tree. Return true if it is a valid binary search tree, and false otherwise. Recall that a binary search tree has the property that all values in the left subtree are less than or equal to the root, and all values in the right subtree are greater than or equal to the root.
Here's a starting point:
标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 主页 | 类别: 计算机科学 | 205 次阅读, 14922 次搜索 | 128 个单词 You are given the root of a binary search tree. Return true if it is a valid binary search tree, and false otherwise. Recall that a binary search tree has the property that all values in the left subtree are less than or equal to the root, and all values in the right subtree are greater than or equal to the root.
Here's a starting point:
class TreeNode:
def __init__(self, key):
self.left = None
self.right = None
self.key = key
def is_bst(root):
# Fill this in.
a = TreeNode(5)
a.left = TreeNode(3)
a.right = TreeNode(7)
a.left.left = TreeNode(1)
a.left.right = TreeNode(4)
a.right.left = TreeNode(6)
print is_bst(a)
# 5
# / \
# 3 7
# / \ /
#1 4 6
![定阅此目录的博客 定阅此目录的博客](/images/form/rss.gif)
猜您喜欢...
- Spreadsheet Column Title
- Reverse a Linked List
- [Daily Problem] Longest Palindromic Substring
- Daily Interview Problem: Count Number of Unival Subtrees
- Algorithm Interview: String Compression
- Algorithm Interview Question: Find the Single Element in an Array of Duplicates
- Daily Interview Problem: Min Stack
- Algorithm Interview: Subarray With Target Sum
- Algorithm Interview Question: Symmetric k-ary Tree
- Daily Interview Problem: Deepest Node in a Binary Tree
©2006~2024 牛排过熟 - 0.01247 秒 - 1682.014 KB/s - 38 在线
内存: 495.43 KB
18:54:01 up 13 days, 18:33, 2 users, load average: 0.98, 0.86, 0.73 - 服务器 PHP 版本号: 7.4.33
牛排怎么做才好吃? | <meta name="机器人" content="索引, 跟踪">
![](/images/top.jpg)
18:54:01 up 13 days, 18:33, 2 users, load average: 0.98, 0.86, 0.73 - 服务器 PHP 版本号: 7.4.33
读写完全 - 一般 - 最小 - 表格 - 所有评论 - 统计
当前页暂时没有评论。