5kyu_MathIssues.js

// 5 kyu - Math Issues

// Description

// Oh no, our Math object was "accidently" reset. Can you re-implement some of those 
// functions? We can assure, that only non-negative numbers are passed as arguments. So 
// you don't have to consider things like undefined, null, NaN, negative numbers, 
// strings and so on.

// Here is a list of functions, we need:

// Math.round()
// Math.ceil()
// Math.floor()

Math.round = function(number) {
  return parseInt(number.toFixed(0));
}

Math.ceil = function(number) {
  return (number % 1 === 0) ? parseInt(number) : parseInt(number + 1);
}

Math.floor = function(number) {
  return parseInt(number);
}