In this kata you should simply determine, whether a given year is a leap year or not. In case you don't know the rules, here they are:
- years divisible by 4 are leap years
- but years divisible by 100 are not leap years
- but years divisible by 400 are leap years
Additional Notes:
- Only valid years (positive integers) will be tested, so you don't have to validate them
Examples can be found in the test fixture.