Javascript Interview Question: Chunked Array - Given an array, create a new array containing chunked arrays of the given size.

chunked-array.js

/*
  Given an array and size, create a new array containing chunked elements with the size provided.
  
  For example, given the array ['Alligator', 'Bear', 'Cat', 'Dog', 'Elephant', 'Flamingo', 'Giraffe'] and size 2,
  return an array of arrays with 2 elements per array.
  
  Result:
  [["Alligator", "Black Bear"], ["Cat", "Dog"], ["Elephant", "Flamingo"], ["Giraffe"]]
*/

function chunk(arr, size) {
  let chunkedArr = [];
  let index = 0;
  
  while (index < arr.length) {
    chunkedArr.push(arr.slice(index, index + size));
    index += size;
  }
  
  return chunkedArr;
}

//Try it
const animals = ['Alligator', 'Bear', 'Cat', 'Dog', 'Elephant', 'Flamingo', 'Giraffe'];
console.log(chunk(animals, 2));