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May 26, 2011 05:43
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Euler Project Problem #002
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| # Solution to Project Euler's second problem | |
| # http://projecteuler.net/index.php?section=problems&id=2 | |
| # Sum all even numbers in the Fibonnacci sequence below 4000000. | |
| i1, i2, sum = 1, 1, 0 | |
| until i1 > 4000000 | |
| if i1.even? then sum = sum + i1 end | |
| i1 = i1 + i2 | |
| if i2.even? then sum = sum + i2 end | |
| i2 = i2 + i1 | |
| end | |
| puts sum |
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