Leap Year Test

[David Hayden]

I'm not fluent in HPPPL and don't have my prime with me, so the following should be taken generically.

The leap year calculation is also a good example of using the XOR function. If a year is divisible by 4 then it's a leap year, but if divisible by 100 then it isn't, but if divisible by 400 then it is:

Code:

boolean isLeapYear = (year%4 == 0) XOR (year%100 == 0) XOR (year%400 == 0)