comefrom: <doocs>0219.Contains Duplicate II_1.py
code: def containsNearbyDuplicate( nums: List[int], k: int) -> bool:
      mp = {}
      for i, v in enumerate(nums):
          if v in mp and i - mp[v] <= k:
              return True
          mp[v] = i
      return False
masked: def sample_funcname ( var_0 : List [ int ] , var_3 : int ) -> bool :
      var_5 = { }
      for var_7 , var_8 in enumerate ( var_0 ) :
          if var_8 in var_5 and var_7 - var_5 [ var_8 ] <= var_3 :
              return True
          var_5 [ var_8 ] = var_7
      return False
  