Understanding

This is where I write down drafts for learning

145. Binary Tree Postorder Traversal

后序遍历（Hard）

Posted on July 13, 2019

Description [Read More]

Tags: Coding LeetCode Tree Hard

144. Binary Tree Preorder Traversal

先序遍历（Medium）

Posted on July 13, 2019

Description [Read More]

Tags: Coding LeetCode Tree DFS Medium

98. Validate Binary Search Tree

Medium

Posted on July 13, 2019

Description [Read More]

Tags: Coding LeetCode Medium Tree

69. Sqrt(x)

Easy

Posted on July 13, 2019

Description [Read More]

Tags: Coding LeetCode Easy Binary Search Math

Model Selection

Posted on July 12, 2019

　　模型选择在实践中非常重要，这里对常用的函数进行总结，方便查看。 [Read More]

Tags: Model Selection Python

看见

柴静

Posted on July 12, 2019

点评:★★★★★ [Read More]

Tags: Books