Created
August 19, 2011 16:00
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Project Euler 8
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| let source = | |
| let src = @"73167176531330624919225119674426574742355349194934 | |
| 96983520312774506326239578318016984801869478851843 | |
| 85861560789112949495459501737958331952853208805511 | |
| 12540698747158523863050715693290963295227443043557 | |
| 66896648950445244523161731856403098711121722383113 | |
| 62229893423380308135336276614282806444486645238749 | |
| 30358907296290491560440772390713810515859307960866 | |
| 70172427121883998797908792274921901699720888093776 | |
| 65727333001053367881220235421809751254540594752243 | |
| 52584907711670556013604839586446706324415722155397 | |
| 53697817977846174064955149290862569321978468622482 | |
| 83972241375657056057490261407972968652414535100474 | |
| 82166370484403199890008895243450658541227588666881 | |
| 16427171479924442928230863465674813919123162824586 | |
| 17866458359124566529476545682848912883142607690042 | |
| 24219022671055626321111109370544217506941658960408 | |
| 07198403850962455444362981230987879927244284909188 | |
| 84580156166097919133875499200524063689912560717606 | |
| 05886116467109405077541002256983155200055935729725 | |
| 71636269561882670428252483600823257530420752963450".ToCharArray() | |
| src |> Seq.filter (System.Char.IsDigit) |> Seq.map (string >> int) |> Seq.toList | |
| let extract = function | |
| | a :: b :: c :: d :: e :: _ as xs -> Some(a * b * c * d * e, xs.Tail) | |
| | _ -> None;; | |
| source | |
| |> Seq.unfold extract | |
| |> Seq.max |
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