Sum multiples of 3 and 5: Difference between revisions
m
more idiomatic point-free definition of triangular
m (more idiomatic point-free definition of triangular) |
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Line 1,732:
NB. inclusion/exclusion
triangular =:
sumdiv =: dyad
(triangular <. x % y) * y
)
echo 'For 10^20 - 1, the sum is ', ": +/ (".
exit ''
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