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  1. import operator
  2.  
  3. def single_number(l):
  4.     return reduce(operator.xor, l, 0)
  5.  
  6. print single_number([1, 1, 2, 2, 3, 4, 4, 5, 5])
Success #stdin #stdout 0.02s 44632KB
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Standard input is empty
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3
https://ideone.com/HpjEhC
language:
Python (PyPy 2.7.13)
created:
9 years ago
visibility:
public

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