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  1. Prepare
  2. Algorithms
  3. Warmup
  4. Plus Minus
  5. Discussions

Plus Minus

  • enriquedelgado
     + 2 comments

    Ruby :-]

    puts arr.count {|n| n > 0} / n.to_f
puts arr.count {|n| n < 0} / n.to_f
puts arr.count {|n| n == 0} / n.to_f