Created
August 5, 2020 03:30
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def f2(n) | |
return n.odd? ? (n * 3 + 1) / 2 : n / 2 | |
end | |
def seqg(n) | |
n1 = n | |
l = [n1] | |
while (n != 1 && n >= n1) | |
n = f2(n) | |
l << n | |
end | |
return l | |
end | |
def flip(s, n) | |
s = s.dup | |
s[n, 1] = (s[n, 1].to_i ^ 1).to_s | |
return s | |
end | |
def delete(s, n) | |
s = s.dup | |
s[n, 1] = '' | |
return s | |
end | |
def insert(s, n) | |
s0 = s.dup | |
s0[n, 0] = '0' | |
s1 = s.dup | |
s1[n, 0] = '1' | |
return s0, s1 | |
end | |
def edit1(s) | |
l = [] | |
s.length.times \ | |
{ | |
|n| | |
l << flip(s, n) | |
l << delete(s, n) | |
} | |
(s.length + 1).times \ | |
{ | |
|n| | |
l += insert(s, n) | |
} | |
return l.select { |x| x[0, 1] != '0' } | |
end | |
def dense(w, d) | |
w2 = w - 1 | |
a = (0...w2).to_a | |
s = '0' * w2 | |
(1..(d * w - 1)).map { a.delete_at(rand(a.size)) }.each { |x| s[x, 1] = '1' } | |
return ('1' + s) | |
end | |
def len(ns, p) | |
l = ns.split(p) | |
l = [] if (l.nil?) | |
l.shift if (l[0] == '') | |
return l.map { |x| x.length } | |
end | |
def len1(ns) | |
return len(ns, /0+/) | |
end | |
def len0(ns) | |
return len(ns, /1+/) | |
end | |
def len01(ns) | |
return len1(ns), len0(ns) | |
end | |
def hist(l) | |
a = {} | |
l.each { |x| a[x] = a.fetch(x, 0) + 1 } | |
return a | |
end | |
def hdiff(a, b) | |
d = 0 | |
(a.keys | b.keys).each { |x| d += (a.fetch(x, 0) - b.fetch(x, 0)).abs } | |
return d | |
end | |
def hdiff2(ns) | |
$h = {} if ($h.nil?) | |
if (!$h.member?(nw = ns.length)) then | |
ns2 = dense(nw, 0.5) | |
l1, l0 = len01(ns2) | |
$h[nw] = [hist(l0), hist(l1)] | |
end | |
a0, a1 = $h[nw] | |
b0, b1 = [hist(len0(ns)), hist(len1(ns))] | |
return hdiff(a0, b0) + hdiff(a1, b1) | |
end | |
def count(ns) | |
l1 = seqg(n = ns.to_i(2)) | |
cg = l1.size | |
nw = ns.length | |
cm = (0...l1.size).max_by { |x| l1[x] } | |
a = {'ns' => ns, | |
'nw' => nw, | |
'cg' => cg, | |
'cm' => cm, | |
'hd' => hdiff2(ns) | |
} | |
return a | |
end | |
def out(a, a2 = {}, t = nil, ct = "(column('t')):", w = ' with line ') | |
fn = $fn.nil? ? 'out.txt' : $fn | |
k = a.keys | |
if ($f1.nil?) then | |
$f1 = File.open(fn, 'w') | |
$f1.puts(k.join("\t")) | |
f2 = File.open('gnuplot.cmd', 'w') | |
st = t.nil? ? 'unset title; ' : "set title '#{t}'; " | |
f2.puts("set ytics nomirror; set y2tics; set colors classic; set key top left box opaque; #{st}; plot \\") | |
(a.keys - ['t']).each \ | |
{ | |
|x| | |
next if (a2.member?(x) && a2[x].nil?) | |
m = a2.fetch(x, '') | |
m += w if (!m.include?('with')) | |
f2.puts("'#{fn}' using #{ct}(column('#{x}')) title '#{x}' #{m}, \\") | |
} | |
f2.puts | |
f2.close | |
end | |
$f1.puts(a.values_at(*k).join("\t")) | |
$f1.flush | |
end | |
def keys(ks2) | |
ksmn = ks2.select { |x| x.end_with?('-') }.map { |x| x.dup } | |
ksmx = ks2 - ksmn | |
ksmn.each { |x| x.replace(x.chop) } | |
x = {'ks' => ksmn + ksmx, 'ksmx' => ksmx, 'ksmn' => ksmn} | |
$stderr.puts(x.inspect) | |
$t = x.dup | |
$t.delete('ks') | |
return x | |
end | |
def order(l, ks2) | |
l2 = (0...l.size).map { {} } | |
$k = keys(ks2) if ($k.nil?) | |
$k['ks'].each \ | |
{ | |
|k| | |
l1 = (0...l.size).map { |x| {k => l[x][k], 'i' => x} } | |
s = $k['ksmx'].member?(k) ? -1 : 1 | |
l1.sort_by! { |x| s * x[k] } | |
(0...l1.size).each { |x| l2[l1[x]['i']][k] = x } | |
} | |
l2.each { |x| x['z'] = x.values.inject(0) { |t, x| t + x } } | |
return (0...l2.size).sort_by { |x| l2[x]['z'] } | |
end | |
def sample2(t, c) | |
l = (0...t).to_a | |
d = (t - 1).to_f / (c - 1) | |
return (0...c).map { |x| l[(x * d).to_i] } | |
end | |
def sample2h(t, c) | |
h = {} | |
sample2(t, c).each { |x| h[x] = nil } | |
return h | |
end | |
def adv(l1, ks, m) | |
l2 = order(l1, ks) | |
i = l2[rand([l2.size, 50].min)] | |
l3 = l2[m..-1] | |
l3 = [] if (l3.nil?) | |
x = nil | |
(l3 | [i]).sort.reverse.each \ | |
{ | |
|x1| | |
x2 = l1.delete_at(x1) | |
x = x2 if (x1 == i) | |
} | |
return x | |
end | |
def opt(ks) | |
l1 = [count('1')] | |
seen = {'' => nil, '0' => nil, '1' => nil} | |
l = [] | |
c = 5e3.to_i | |
m = 500 | |
h = sample2h(c, 2000) | |
c.times \ | |
{ | |
|t| | |
$stderr.puts(t) if (t % 100 == 0) | |
l << (x = adv(l1, ks, m)) | |
out(x.merge({'t' => t}), | |
{'ns' => nil, | |
}, $t.inspect) if (h.member?(t)) | |
edit1(x['ns']).each \ | |
{ | |
|ns| | |
next if (seen.member?(ns)) | |
l1 << count(ns) | |
seen[ns] = nil | |
} | |
} | |
end | |
ks = ['nw', 'hd-'] | |
ks = ['nw', 'cg', 'hd-'] | |
ks = ['cg', 'hd-'] | |
ks = ['cm', 'hd-'] | |
ks = ['cg', 'cm', 'hd-'] | |
ks = ['nw', 'cm', 'hd-'] | |
ks = ['nw', 'cg', 'cm', 'hd-'] | |
opt(ks) | |
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