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  1. def single_number(nums)
  2.     nums.reduce(:^)
  3. end
  4.  
  5. puts single_number([1, 1, 2, 2, 3, 4, 4, 5, 5])
Success #stdin #stdout 0.05s 9704KB
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Standard input is empty
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3
https://ideone.com/hrmJN6
language:
Ruby (ruby 2.5.5)
created:
9 years ago
visibility:
public

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