Lah numbers: Difference between revisions
→{{header|Ruby}}: correction for (0,0) case
(→{{header|Ruby}}: correction for (0,0) case) |
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Line 1,334:
def lah(n, k)
case k
when 1 then fact(n)
when n then 1
when (..1),(n..) then 0
else n<1 ? 0 : (fact(n)*fact(n-1)) / (fact(k)*fact(k-1)) / fact(n-k)
end
end
Line 1,358 ⟶ 1,357:
<pre>Unsigned Lah numbers: L(n, k):
n/k 0 1 2 3 4 5 6 7 8 9 10 11 12
0
1 0 1
2 0 2 1
Line 1,376 ⟶ 1,375:
siep@siep-desktop:~$
</pre>
=={{header|Sidef}}==
<lang ruby>func lah(n, k) {
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