comefrom: <doocs>0349.Intersection of Two Arrays_1.py
code: def intersection( nums1: List[int], nums2: List[int]) -> List[int]:
      s = set(nums1)
      res = set()
      for num in nums2:
          if num in s:
              res.add(num)
      return list(res)
masked: def sample_funcname ( var_0 : List [ int ] , var_3 : List [ int ] ) -> List [ int ] :
      var_5 = set ( var_0 )
      var_6 = set ( )
      for var_7 in var_3 :
          if var_7 in var_5 :
              var_6.add ( var_7 )
      return list ( var_6 )
  