Remove JSONArray Java Duplicates

In Java, you can use LinkedHashSet to remove duplicate elements from a JSONArray. The specific steps are as follows:

1. Convert JSONArray to a List object.
2. Convert a List object to a LinkedHashSet object, so that LinkedHashSet will automatically remove duplicate elements.
3. Convert the LinkedHashSet object after removing duplicates into a JSONArray object.

Here is an example code:

import org.json.JSONArray;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        JSONArray jsonArray = new JSONArray("[1, 2, 3, 2, 4, 3, 5]");

        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < jsonArray.length(); i++) {
            list.add(jsonArray.getInt(i));
        }

        LinkedHashSet<Integer> set = new LinkedHashSet<>(list);

        JSONArray uniqueJsonArray = new JSONArray();
        for (Integer num : set) {
            uniqueJsonArray.put(num);
        }

        System.out.println(uniqueJsonArray.toString());
    }
}

The above code will output a deduplicated JSONArray: [1, 2, 3, 4, 5].