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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Iterated-digits-squaring/Sidef/iterated-digits-squaring.sidef Normal file
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func digit_square_sum_iter(n) is cached {
if ((n == 1) || (n == 89)) {
return n
}
__FUNC__(n.digits.sum { .sqr })
}
say (1..1e6 -> count_by { digit_square_sum_iter(_) == 89 })