The purpose of this function:
Given an array of length >= 0, and a positive integer N, return the contents of the array divided into N equally sized arrays. Where the size of the original array cannot be divided equally by N, the final part should have length equal to the remainder.
This function is fully unit tested with Mocha. To install Mocha on your machine, open a terminal and type:
npm install mocha -g --save-dev
More info: http://mochajs.org/#installation
Clone the project onto your machine:
git clone git@github.com:allygraham/array-function.git
By typing the command mocha in your terminal while in the project folder, the tests will run.
mocha
The function takes an initial array and the integer. It creates a new empty array for the output as the use of .splice() means that items are removed from the initial array. .splice() also assists with the while loop as the condition for the while loop is the length of the initial array, as it iterates through .splice() makes the length smaller until the initial array is empty. Each iteration also had a .push() which moved the removed contents into the output array within it's own array.
Also, for the .splice() function to work I had to pass in the number of items I wanted removed from the array in each iteration. To do this I divided the length of the input array by the integer amount to determine how many items should be removed during each iteration for the sub arrays. I rounded this number up with Math.ceil() to the nearest whole integer.