Arrays in Python give you a huge amount of flexibility for storing, organizing, and accessing data. ... Likewise, if we add a new entry at the start of a list, ...

For instance, if we wanted to take x1 and use np.add to sum the array, we could use the .add method np.add.accumulate(x1) instead of looping over each element in the array to create a sum.

Unlike a list in say Python, however, Java arrays are of a fixed size. There is no way to remove elements or to add to the array at run time. This restriction is great for optimized code but of ...