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  1. class Set(list):
  2.     def __init__(self, value = []):
  3.         list.__init__([])
  4.         self.concat(value)
  5.  
  6.     def intersect(self, other):
  7.         res = []
  8.         for x in self:
  9.             if x in other:
  10.                 res.append(x)
  11.         return Set(res)
  12.  
  13.     def union(self, other):
  14.         res = Set(self)
  15.         res.concat(other)
  16.         return res
  17.  
  18.     def concat(self, value):
  19.         for x in value:
  20.             if not x in self:
  21.                 self.append(x)
  22.  
  23.     def __and__(self, other): return self.intersect(other)
  24.     def __or__(self, other):  return self.union(other)
  25.     def __repr__(self):       return 'Set:' + list.__repr__(self)
  26.  
  27. if __name__ == '__main__':
  28.     x = Set([1,3,5,7])
  29.     y = Set([2,1,4,5,6])
  30.     print(x, y, len(x))
  31.     print(x.intersect(y), y.union(x))
  32.     print(x & y, x | y)
  33.     x.reverse(); print(x)
Success #stdin #stdout 0.02s 28376KB
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Set:[1, 3, 5, 7] Set:[2, 1, 4, 5, 6] 4
Set:[1, 5] Set:[2, 1, 4, 5, 6, 3, 7]
Set:[1, 5] Set:[1, 3, 5, 7, 2, 4, 6]
Set:[7, 5, 3, 1]
https://ideone.com/7Ea751
language:
Python 3 (python  3.9.5)
created:
6 years ago
visibility:
public

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