# Good Morning

Send scheduled for Fri, Dec 4, 4:49 AM



Hi xiaozeng. It's good to see you before the day.\
The day of mine starts at night.\


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I found that night is a good friend of mine if I want to use my brain to do some creative work or intelligent work.\
Here is what I said over Twitter:

> I have spent two days 6 hours per day and one night for one hour to solve an algorithm problem. \
> It's amazing to know that finally, I solved it. \
> The night is the best friend for a brain worker.\
> [https://leetcode.com/problems/trim-a-binary-search-tree](https://leetcode.com/problems/trim-a-binary-search-tree/)\
> \
> The hardest part is that you should know a binary search tree is a special data structure. It has a feature that says the left node will always smaller than the right node. \
> I was trying to solve it as a normal binary tree at first but failed due to the complexity.\
> \
> Analyze problems with free drawing is also a good practice, by the way.

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我花了两天时间(白天在上班，基本上是下午4、5点到晚上10、11点)，尝试去解决上次那个算法题。结果今天晚上1点多自然醒后花了一个小时就解决了(没办法，醒来的时候感觉做梦都在想这个事情，觉得非做出来不可)。\
所以即使问题看起来很难，坚持一下，解决问题的方法总是会被找到的。
