The split method is the opposite of join. While join combines the elements
of an array into a string, split divides a string into an array. Like join,
split takes an optional argument: the delimiter. The delimiter is a string
along which split divides the receiver string. Whatever string you use as the
delimiter will be omitted from the returned array. By default, the delimiter is
an empty space (' '). The split method does not modify the original string.