A description is incomplete. It should mention:

These patterns are not competing, but complementing each other. To achieve availability, one needs both fail-over and replication.

right after

"There are two main patterns to support high availability: fail-over and replication. "

• We have BFS and DFS images in both Breadth First Traversal and Depth First Traversal. We should have illustrations in the respective sections.

Hey Yangshun,
Thanks for the great list of guides!

I found the explanation for Snake game bit difficult to follow and I came across this interesting and better explanantion here https://www.youtube.com/watch?v=AaGK-fj-BAM

https://mybinder.org/ Should I make a binder ? :) Or if there is a binder link, it's well hidden.

Hi all,

I found that there is a better visualized article on activity launch modes with a more descriptive explanation.

https://inthecheesefactory.com/blog/understand-android-activity-launchmode/en

Is it possible to link to this article on the Activity -> What are "launch modes" ?

We need to improve the comments explaining the main ideas / insights of the solution