14 lines
371 B
Nim
14 lines
371 B
Nim
import strutils
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proc droot(n: int64): auto =
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var x = @[n]
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while x[x.high] > 10:
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var s = 0'i64
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for dig in $x[x.high]:
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s += parseInt("" & dig)
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x.add s
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return (x.len - 1, x[x.high])
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for n in [627615'i64, 39390'i64, 588225'i64, 393900588225'i64]:
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let (a, d) = droot(n)
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echo align($n, 12)," has additive persistance ",a," and digital root of ",d
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