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solutions/0000_0029/0016.PowerDigitSum/eular_16.hs
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solutions/0000_0029/0016.PowerDigitSum/eular_16.hs
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import Data.Char (digitToInt)
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-- 计算 b^n 的各位数字之和
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powerDigitSum :: Integer -> Integer -> Integer
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powerDigitSum b n = sum . map digitToInt . show $ b ^ n
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-- 示例使用
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main :: IO ()
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main = do
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-- 测试用例
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print $ powerDigitSum 2 15 -- 32768 → 3+2+7+6+8 = 26
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print $ powerDigitSum 10 100 -- 1后跟100个0 → 1
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print $ powerDigitSum 3 3 -- 27 → 2+7 = 9
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print $ powerDigitSum 2 1000
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