What roadmap is this issue about?

• Frontend Roadmap
• Backend Roadmap
• DevOps Roadmap
• All Roadmaps

What is this issue about?

• D

Histories make men wise.

The link for the course above is dead and should be replaced by https://cs.brown.edu/courses/cs123/index.shtml. I'll create a pull request to address this issue as well.

一个班级60%喜欢足球，70%喜欢篮球，80%喜欢排球，问：三种球都喜欢占比最大可能有多少，最小可能有多少？即求三种球都喜欢的比例范围

Users should be able to sort books on basis of rating, year published, title etc.

See https://github.com/hackerkid/Mind-Expanding-Books/tree/master/app to setup development environment

Some possible suggestions are - sites which teach algorithms, sites which interactively visualize different algorithms. Also, notebooks/question pages of ACM themed contests can be added.