METHOD:
Array::join
Array.join(separator)
The join method is used to join all the elements of an array
into a single string separated by a specified string separator (if none
is specified, the default is a comma).
The following example produces a string of all the elements of the
array 'cars' separated by a plus sign (+):
Code:
cars.join(" + ")
Output:
Mercedes + Ford + Chrysler
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