Removing duplicates from an Array of Strings, with

Question

What would be the best means of going about this without explicit comparison?

Answer 1

- Use Collection named Set, which maintains Uniqueness.

- Use asList() method of Array to convert it into List, and then use addAll() method to add the List to the Set.

- Adding List to the Set will remove the duplicates.

Eg:

String[] arr = {"Vivek","John","Rick"};

ArrayList<String> arList = new ArrayList<String>(Arrays.asList(arr));

TreeSet<String> arSet = new TreeSet<String>();

arSet.addAll(arList);       // duplicates removed

Answer 2

If List Of Object contains Strings , You need to Add them to Set.

If the list contains Custom object , override equals meth in the custom class and those object to Set