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negamorgan/euler-problem-2.rb

Created April 30, 2014 21:32
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euler-problem-2.rb
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euler-problem-2.rb
def even_fibonacci_numbers
fibonacci_numbers.select {|n| n.even? }.reduce(:+)
end
def fibonacci_numbers
numbers = [1, 2]
while numbers[-1] < 4_000_000 do
numbers << numbers[-2] + numbers[-1]
end
numbers[0..-2]
end
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