twoSum Algorithm : How to improve this?

Question

I felt like doing an algorithm and found this problem on leetcode

Given an array of integers, find two numbers such that they add up to a specific target num

Answer 1

As @Prayer mentioned above, here is the accepted answer.

class Solution {
    public int[] twoSum(int[] nums, int target) {
        int[] resultarray=new int[2];
        for (int i=0;i