how to get an array with unique values from two arrays code example

Example 1: return unique values array from two arrays java

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class MergeNames {

    public static String[] uniqueNames(String[] names1, String[] names2) {

        String[] combine = Stream.concat(Arrays.stream(names1), Arrays.stream(names2))
                .toArray(String[]::new);

        List<String> distinctElements = Arrays.stream(combine)
                .distinct()
                .collect(Collectors.toList());

        return distinctElements.toArray(new String[distinctElements.size()]);

    }

    public static void main(String[] args) {
        String[] names1 = new String[] {"Ava", "Emma", "Olivia"};
        String[] names2 = new String[] {"Olivia", "Sophia", "Emma"};
        System.out.println(String.join(", ", MergeNames.uniqueNames(names1, names2))); // should print Ava, Emma, Olivia, Sophia
    }
}

Example 2: find unique values between multiple array

var array3 = array1.filter(function(obj) { return array2.indexOf(obj) == -1; });

Example 3: return uncommon from two arrays js

let array = [1,2,3,4,5,6,78,9];

function except(array,excluded){
let newArr,temp,temp1;

      check1=array.filter(function(value) 
                {
                  return excluded.indexOf(value) == -1; 

                });

      check2=excluded.filter(function(value) 
                {
                  return array.indexOf(value) == -1; 

                });

    output=check1.concat(check2);


    return output;

  }


except(array,[1,2])

//so the output would be => [ 3, 4, 5, 6, 78, 9 ]