<awangdev>78. Subsets_4.java
private List<Integer> buildResult(List<Integer> indexRow, int[] nums) {

        List<Integer> list = new ArrayList<>();
        for (int index : indexRow) list.add(nums[index]);
        return list;
    }
private List < Integer > var_1 ( List < Integer > var_3 , int [ ] var_4 ) {
  List < Integer > var_6 = new ArrayList < > ( ) ;
  for ( int var_7 : var_3 ) var_6 . add ( var_4 [ var_7 ] ) ;
  return var_6 ;
}
