Self numbers: Difference between revisions
Content added Content deleted
m (→{{header|Phix}}: added escuse) |
m (→generator dictionary: pqhead -> gdhead) |
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Aside: the getd_index() check is often worth trying with phix dictionaries: if there is a high probability that |
Aside: the getd_index() check is often worth trying with phix dictionaries: if there is a high probability that |
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the key already exists, it will yield a win, but with a low probability it will just be unhelpful overhead. |
the key already exists, it will yield a win, but with a low probability it will just be unhelpful overhead. |
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<lang Phix>integer gd = new_dict(), g = 1, |
<lang Phix>integer gd = new_dict(), g = 1, gdhead = 2, n = 0 |
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function ng(integer n) |
function ng(integer n) |
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integer nxt |
integer nxt |
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n += 1 |
n += 1 |
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while n= |
while n=gdhead do |
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while g<= |
while g<=gdhead do |
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nxt = ng(g) |
nxt = ng(g) |
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if getd_index(nxt, gd)=NULL then -- (~25% gain) |
if getd_index(nxt, gd)=NULL then -- (~25% gain) |
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g += 1 |
g += 1 |
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end while |
end while |
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integer |
integer wasgdhead = gdhead |
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while true do |
while true do |
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gdhead = pop_dict(gd)[1] |
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if |
if gdhead!=wasgdhead then exit end if |
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-- ?{"ding", |
-- ?{"ding",wasgdhead} -- 2, once only... |
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end while |
end while |
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nxt = ng( |
nxt = ng(gdhead) |
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-- if getd_index(nxt, gd)=NULL then -- (~1% loss) |
-- if getd_index(nxt, gd)=NULL then -- (~1% loss) |
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setd(nxt,0,gd) |
setd(nxt,0,gd) |
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-- end if |
-- end if |
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n += (n!= |
n += (n!=gdhead) |
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end while |
end while |
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return n |
return n |
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