Leap years

We use this kata to develop the fundamentals of classic test-driven development

Overview

Write a function that returns true or false depending on whether its input integer is a leap year or not.

Objectives

A leap year is defined as one that is divisible by 4, but is not otherwise divisible by 100 unless it is also divisible by 400.

Examples

Year	Type	Result
2019	Typical common year	false
2020	Typical leap year	true
2000	Atypical common year	false
1900	Atypical leap year	true