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Jun 18th, 2018
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  1. A = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
  2. B = [1, 2, 3, 5, 11]
  3.  
  4. def contagem_interseccao(a, b):
  5. s = set(a)
  6. return len(s.intersection(b))
  7.  
  8. print(contagem_interseccao(A, B)) # 4
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