Solving Google Treasure Hunt Puzzle 4: Prime Numbers

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June 09, 2008, 08:03

I used Python to solve this:
http://kourge.net/node/116

The need to write code for doing list intersections was a bit ugly; if I were using Ruby it wouldn't have needed an "intersection" function because consecutives.inject(:"&") would have done the job, although I'm not sure if Ruby's built-in & method is efficient enough.

My implementation runs about 7 seconds for five conditions. ([3, 5, 143, 865, 1089] => [5990183])

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