Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/juanitofatas/cheryl
Ruby translation of Peter Norvig's solution to When is Cheryl's birthday problem
https://github.com/juanitofatas/cheryl
cheryl ruby
Last synced: 6 days ago
JSON representation
Ruby translation of Peter Norvig's solution to When is Cheryl's birthday problem
- Host: GitHub
- URL: https://github.com/juanitofatas/cheryl
- Owner: JuanitoFatas
- Created: 2018-02-12T21:02:18.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2018-02-13T07:02:35.000Z (almost 7 years ago)
- Last Synced: 2024-12-24T06:27:55.233Z (10 days ago)
- Topics: cheryl, ruby
- Language: Ruby
- Homepage: https://github.com/JuanitoFatas/cheryl
- Size: 9.77 KB
- Stars: 3
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
This is my Ruby translation to Peter Norvig's [solution to When is Cheryl's Birthday problem][norvig-cheryl-py].
# When is Cheryl's Birthday?
1. Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is. Cheryl gave them a list of 10 possible dates:
```
May 15 May 16 May 19
June 17 June 18
July 14 July 16
August 14 August 15 August 17
```
2. Cheryl then tells Albert and Bernard separately the month and the day of the birthday respectively.
3. Albert: I don't know when Cheryl's birthday is, but I know that Bernard does not know too.
4. Bernard: At first I don't know when Cheryl's birthday is, but I know now.
5. Albert: Then I also know when Cheryl's birthday is.
6. So when is Cheryl's birthday?
View Peter Norvig's solution translate in Ruby:
- [Create abstraction for cheryl's possible dates](https://github.com/JuanitoFatas/cheryl/commit/5979188)
- [Cheryl tells part of birthday](https://github.com/JuanitoFatas/cheryl/commit/32f1943)
- [Person knows birthday if possible date only one](https://github.com/JuanitoFatas/cheryl/commit/34e3e2d)
- [Statement 3 - Albert: I don't know when Cheryl's birthday is, but I know that Bernard does not know too](https://github.com/JuanitoFatas/cheryl/commit/78382b7)
- [Statement 4 - Bernard: At first I don't know when Cheryl's birthday is, but I know now](https://github.com/JuanitoFatas/cheryl/commit/8289a1c)
- [Statement 5 - Albert: Then I also know when Cheryl's birthday is](https://github.com/JuanitoFatas/cheryl/commit/7057899)
- [So when is Cheryl's birthday?](https://github.com/JuanitoFatas/cheryl/commit/5240c10)
## Credits
See [norvig/pytudes - Python programs to practice or demonstrate skills][pytudes], it's gold.
[norvig-cheryl-py]: https://github.com/norvig/pytudes/blob/master/ipynb/Cheryl.ipynb
[pytudes]: https://github.com/norvig/pytudes