Challenge 24 Points#
Download link: Challenge 24 Points - Puzzle and Leisure
Background#
I developed this because the Long Card credit card has a daily check-in feature that sometimes includes a challenge to make 24 points. I thought it was interesting, so I decided to create an app for it so I can play it during my commute.
The interface of the Long Card credit card is as follows:
Development#
At first, I thought it would be simple, but after doing it, I realized that determining whether a given set of numbers can equal 24 and calculating the result of a given mathematical expression are both problems. I have compiled a blog post on this topic: Swift Postfix Expression (Reverse Polish Notation) Conversion and Calculation, which you can refer to.
What sets this 24 Points app apart from others is the ability to change the theme. Initially, I planned to provide a set of skins specifically for children, where fruits would replace the numbers. For example, 1 banana would represent the number 1, 2 apples would represent the number 2, and so on. However, I couldn't find suitable images, so I changed it to a custom image feature. If you want to use it for children, you can replace the images with your own.
Originally, there was also a challenge sharing feature. In the first version, I imitated the sharing page of WeChat Reading. However, during the second round of review, it kept getting flagged as 4.3 Design Spam, so I removed it.
PS: This review process is really exhausting. I removed the share app, about page, feedback suggestions, go-to-review, and challenge history sharing three times due to 4.3 Design Spam. I almost gave up. This version was originally 4.3, but I appealed and found out this morning that it was approved.
It might be because of the last submission of the American TV series app that there was some issue with my account. As mentioned before, the American TV series app has been open-sourced on GitHub. If you're interested, you can search for "Not Just American TV Series". It's for educational purposes only, not for promotion or distribution.
If you have any good ideas or suggestions, please provide feedback. Thank you.
Update Plans#
In the future, I plan to redesign and add the history sharing page back to the app. I'm also considering creating a mini-program version for online PK challenges and documenting the steps to create a 24 Points app. These are the current plans. If you're interested, please contact me.