class Solution {
    public int[] singleNumber(int[] nums) {
        int single1=0, single2=0;
        boolean found=false;
        Map<Integer, Integer> map = new HashMap<>();
        for(int num: nums){
            map.put(num, map.getOrDefault(num, 0) +1);
        }
        for(Map.Entry<Integer, Integer> entry: map.entrySet()){
            if(entry.getValue()==1&&!found){
                single1=entry.getKey();
                found=true;
            }
            if(entry.getValue()==1&&found){
                single2=entry.getKey();
            }
        }
        return new int[]{single1, single2};
    }
}