More on ArrayList
I have method that returns an ArrayList which consists of Sets of integers
an example output :
[[77, 220], [35, 300], [45, 160, 310, 503], [101, 140, 250]]
I want to write a method that will receive the output from more than one instance and returns the duplicate integers between each instance...
Any Suggestions ?
ArrayList<Set<Integer>> dups = new ArrayList<Set<Integer>>();
// then inside a for loop
//doesn't work an empty set will return