### shuffle Randomizes the order of the values of an array, in place. Users the Fisher-Yates reorder the elements, based on the [Lodash implementation](https://github.com/lodash/lodash/blob/b2ea6b1cd251796dcb5f9700c4911a7b6223920b/shuffle.js). ```js const shuffle = (arr = []) => { let i = -1; const lastIndex = arr.length - 1; while (++i < arr.length) { const rand = i + Math.floor(Math.random() * (lastIndex - i + 1)); const value = arr[rand]; arr[rand] = arr[i]; arr[i] = value; } return arr }; // shuffle([1,2,3]) -> [2,3,1] ```