Introduction

The first century spans from the year 1 up to and including the year 100, The second - from the year 101 up to and including the year 200, etc.

Task :

Given a year, return the century it is in.

Input , Output Examples ::

centuryFromYear(1705)  returns (18)
centuryFromYear(1900)  returns (19)
centuryFromYear(1601)  returns (17)
centuryFromYear(2000)  returns (20)

my answer

function century(year) {
  return Math.ceil(year / 100) > 0 ? Math.ceil(year / 100) : 1;
}

Best Practices

const century = year => Math.ceil(year/100)