class Solution {
    public int[] twoSum(int[] nums, int target) {
        for(int i = 0; i<nums.length; i++){
            for(int j=i+1; j<nums.length; j++){
                if(nums[i] + nums[j] == target){
                    int a[] = {i, j};
                    return a;
                }
            }
        }
        return null;
    }
}