DSA learning practice:

由实践总结出来的，学习算法和数据结构：

看视频不如看slides、看书。

visualization + explaination + code = enough learning

read the code, then extract the abstract idea.

Use abstract idea to simplify logic and improve memory of code.

(Yes, you can't avoid memorizing your code, you must face your code directly and re-encode it in your mind)

The basic is code, and the explaination is helper indeed.

但是具体操作类的（比如软件操作使用）看视频比较方便。

也就是说，各类信息获取方式各有优劣。