array_of_light.js

// Write a function arrayOfLight(x) (get it? Lighthouse…? Come on!) which takes one parameter, a positive number, and return
// an array containing all numbers from 0 up to and including the given number. 


function arrayOfLight(x) {
  var array = [];
  for(var y = 0; y <= x; y++) {
    array.push(y);
  }
  return array;
};
arrayOfLight(4);