jhta · August 21, 2018 17:25
diff --git a/citrusbyte.js b/citrusbyte.js

 /* Write some code, that will flatten an array of arbitrarily
 nested arrays of integers into a flat array of integers.
 e.g. [[1,2,[3]],4] -> [1,2,3,4]. */


 const flattenArray = array => array.reduce(
  (acumulator, element) => acumulator.concat(
    Array.isArray(element) ?
      flattenArray(element)
      :
      element
  ), []
 )

 /* I'm sure that your team have amazing engineers that  
 understand the recursivity and functional javascript + es6.
 But for the rest of humans, I can explicate it:*/

 function flattenArrayForDommies(array) {
  // first, I'm using the array method reduce. this let me iterate 
  // every item and get an acumulator. We define a the method for generate
  // this acumulator
  console.log("recursive itself:" array);
  return array.reduce(iterate, []);
 }

 // reduce method
 function iterate(acumulator, element) {
  console.log("current acum:", acumulator);
  console.log("current element:", element);
  // if the element is an array, call recursive flatten array method 
  if (Array.isArray(el)) {
    // if is an array, return the acumulator concat with the recursive call
    // for the array element
    return [...acum, ...(flattenArrayForDommies(el))]; // spread operator :D
  }
  // if it is not an array, push it in the acumulator
  return [...acum, (el)];
 }

 console.log("flatten", flattenArray([[1,2,[3]],4]))
 console.log("flatten", flattenArrayForDommies([[1,2,[3]],4]))

	/* Write some code, that will flatten an array of arbitrarily
	nested arrays of integers into a flat array of integers.
	e.g. [[1,2,[3]],4] -> [1,2,3,4]. */


	const flattenArray = array => array.reduce(
	(acumulator, element) => acumulator.concat(
	Array.isArray(element) ?
	flattenArray(element)
	:
	element
	), []
	)

	/* I'm sure that your team have amazing engineers that
	understand the recursivity and functional javascript + es6.
	But for the rest of humans, I can explicate it:*/

	function flattenArrayForDommies(array) {
	// first, I'm using the array method reduce. this let me iterate
	// every item and get an acumulator. We define a the method for generate
	// this acumulator
	console.log("recursive itself:" array);
	return array.reduce(iterate, []);
	}

	// reduce method
	function iterate(acumulator, element) {
	console.log("current acum:", acumulator);
	console.log("current element:", element);
	// if the element is an array, call recursive flatten array method
	if (Array.isArray(el)) {
	// if is an array, return the acumulator concat with the recursive call
	// for the array element
	return [...acum, ...(flattenArrayForDommies(el))]; // spread operator :D
	}
	// if it is not an array, push it in the acumulator
	return [...acum, (el)];
	}

	console.log("flatten", flattenArray([[1,2,[3]],4]))
	console.log("flatten", flattenArrayForDommies([[1,2,[3]],4]))