In a legacy system, directions are stored by magnitude followed by direction. Thus, "12E" represents " travel 12 kms towards east, "4N" represents 4kms to the north, "120S" represents 120 kms south and finally "3W" represents 3 kms towards west.

Given an array that holds a collection of individiaul directions, return how far from the starting point will we be.

You can use Integer.parseInt(<String>) to convert a String to int (provided it can be converted).

You will also need String functions such as charAt and substring.