Perform a Union on Two Sets
In this exercise we are going to perform a union on two sets of data. We will
create a method on our Set data structure called union. This method should
take another Set as an argument and return the union of the two sets,
excluding any duplicate values.
For example, if setA = ['a','b','c'] and setB = ['a','b','d','e'], then the
union of setA and setB is: setA.union(setB) = ['a', 'b', 'c', 'd', 'e'].
Test
{{test}}Console output