elm/exercises/sum-of-multiples/SumOfMultiples.example

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module SumOfMultiplesExample where
sumOfMultiples : List Int -> Int -> Int
sumOfMultiples factors upperLimit =
List.sum (List.filter (isMultipleOfAnyFactor factors) [1 .. (upperLimit - 1)])
isMultipleOfAnyFactor : List Int -> Int -> Bool
isMultipleOfAnyFactor factors candidate =
List.any (\factor -> candidate % factor == 0) factors