Two sums

Two sum

class Solution {
    public int[] twoSum(int[] nums, int target) {
        HashMap<Integer,Integer> map = new HashMap<>();
        for(int i =0;i< nums.length;i++){
            map.put(nums[i],i);
        }
        for(int i =0;i< nums.length;i++){
            if(map.containsKey(target-nums[i]) && i!=map.get(target-nums[i])){
                return new int[]{i,map.get(target-nums[i])};
            }
        }
        return new int[0];
    }
}