Question

Example I have this array:

@packages = ["2", ["4", "2", "1"], "4", ["4","2"], ["5", "6"]]

2 and 4 may not be composed

There for ["4", "2", "1"] and ["4,"2"] should be removed from the array

How should it be done?

So the output would be: @packages = ["2", "4", ["5", "6"]]

2 and 4 is just an example. And the number of numbers vary also.

Answer 1

If you want to remove arrays, that have at least 2 elements in common with given do:

@packages = ["2", ["4", "2", "1"], "4", ["4","2"], ["3", "2"]]
@opposites = ["2", "4"]

@packages.reject! { |p| p.is_a?(Array) && (@opposites & p).size >= 2 }

After this @packages => ["2", "4", ["3", "2"]]