I want to develop many methods for the Multiset class.
I am unsure of how to write intersection, union, and subset methods, while I have all the necessary methods.
My code begins with: "My code starts with intersection and union."
x = Multiset.new
Take this example
X = [1, 1, 2, 4]
Y = [1, 2, 2, 2]
Here, intersection would be [1,2]