leap-years.md

Leap Years ^{7 Kyu}

^{LINK TO THE KATA - DATE TIME ALGORITHMS}

Description

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

Solution

const isLeapYear = year => {
  if (year % 400 === 0) return true
  if (year % 100 === 0) return false
  if (year % 4 === 0) return true

  return false
}