56 lines
1.2 KiB
Markdown
56 lines
1.2 KiB
Markdown
|
# Leap
|
||
|
|
|
||
|
|
Welcome to Leap on Exercism's Haskell Track.
|
||
|
|
If you need help running the tests or submitting your code, check out `HELP.md`.
|
||
|
|
|
||
|
|
## Instructions
|
||
|
|
|
||
|
|
Given a year, report if it is a leap year.
|
||
|
|
|
||
|
|
The tricky thing here is that a leap year in the Gregorian calendar occurs:
|
||
|
|
|
||
|
|
```text
|
||
|
|
on every year that is evenly divisible by 4
|
||
|
|
except every year that is evenly divisible by 100
|
||
|
|
unless the year is also evenly divisible by 400
|
||
|
|
```
|
||
|
|
|
||
|
|
For example, 1997 is not a leap year, but 1996 is. 1900 is not a leap
|
||
|
|
year, but 2000 is.
|
||
|
|
|
||
|
|
## Notes
|
||
|
|
|
||
|
|
Though our exercise adopts some very simple rules, there is more to
|
||
|
|
learn!
|
||
|
|
|
||
|
|
For a delightful, four minute explanation of the whole leap year
|
||
|
|
phenomenon, go watch [this youtube video][video].
|
||
|
|
|
||
|
|
[video]: http://www.youtube.com/watch?v=xX96xng7sAE
|
||
|
|
|
||
|
|
To complete this exercise you need to implement the function `isLeapYear`
|
||
|
|
that takes a year and determines whether it is a leap year.
|
||
|
|
|
||
|
|
## Source
|
||
|
|
|
||
|
|
### Created by
|
||
|
|
|
||
|
|
- @etrepum
|
||
|
|
|
||
|
|
### Contributed to by
|
||
|
|
|
||
|
|
- @iHiD
|
||
|
|
- @karen-pal
|
||
|
|
- @kytrinyx
|
||
|
|
- @navossoc
|
||
|
|
- @paulrex
|
||
|
|
- @petertseng
|
||
|
|
- @ppartarr
|
||
|
|
- @rbasso
|
||
|
|
- @sshine
|
||
|
|
- @tejasbubane
|
||
|
|
- @tofische
|
||
|
|
|
||
|
|
### Based on
|
||
|
|
|
||
|
|
JavaRanch Cattle Drive, exercise 3 - http://www.javaranch.com/leap.jsp
|