Created
October 20, 2018 21:53
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def f2(n) | |
return n.odd? ? (n * 3 + 1) / 2 : n / 2 | |
end | |
def re(n, t) | |
s = (n % 2).to_s | |
n1 = n | |
t.times \ | |
{ | |
n = f2(n) | |
s << (n % 2).to_s | |
break if (n == 1) | |
} | |
return s, n | |
end | |
def adj(x, m, n, s2, p2, p, x3) | |
s2.replace(p[0...x] + (x3 % 2).to_s) | |
m = (s2[x, 1] == p[x, 1]) | |
n = p2.reverse.to_i(2) | |
p2[x, 1] = m ? '11' : '01' | |
return m, n, x3 | |
end | |
#srand(5) | |
def terras121(p) | |
p2 = ['01', '11'][p[0, 1].to_i] | |
n = 1 | |
n3 = 0 | |
m = p2 == '11' | |
x3 = (p2.reverse.to_i(2)) >> 1 | |
(1...p.length).each \ | |
{ | |
|x| | |
if (!m) | |
ns = n.to_s(2) | |
ns[0, 1] = '' | |
m1 = x3 - 3**n3 | |
n1 = f2(m1) | |
end | |
n3 = p[0...x].split('').select { |z| z == '1' }.size | |
s2 = '' | |
m, n, x3 = adj(x, m, n, s2, p2, p, m ? (f2(x3) + 3**n3) : (n1 + 3**n3)) | |
} | |
n = p2.reverse.to_i(2) | |
s, n2 = re(n, p.length - 1) | |
raise if (s != p) | |
return n | |
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 d(s) | |
c = s.split('').select { |x| x == '1' }.size | |
d = c.to_f / s.length | |
return d | |
end | |
def cut(b, w, c) | |
a = (1...w).to_a | |
p = (1..c).map { a.delete_at(rand(a.size)) } | |
s = b.to_s * w | |
p.sort.reverse.each { |x| s[x, 0] = '-' } | |
return s.split('-') | |
end | |
def entropy(w, c) | |
c = [1, c].max | |
c = [w - 1, c].min | |
c2 = (c + 1) / 2 | |
w2 = w / 2 | |
l1 = c.even? ? cut(1, w2, c2) : cut(1, w2, c2 - 1) | |
l0 = cut(0, w2, c2 - 1) | |
l0 << '' if (c.even?) | |
return [l1, l0].transpose.join | |
end | |
def len01(ns) | |
nl = ns.length | |
l1 = ns.split(/0+/).map { |x| x.length } | |
l2 = ns.split(/1+/)[1..-1] | |
l2 = [''] if (l2.nil?) | |
l0 = l2.map { |x| x.length } | |
return l0, l1 | |
end | |
def e(ns) | |
return len01(ns).flatten.size.to_f / ns.length | |
end | |
def de(ns) | |
return d(ns), e(ns) | |
end | |
c = 1000 | |
w = 50 | |
f = File.open('gnuplot.cmd', 'w') | |
f.puts('$dat << eof') | |
vs = ['x', 'd_d', 'd_e', 'e_d', 'e_e'] | |
f.puts(vs.join("\t")) | |
c.times \ | |
{ | |
|x| | |
de = x.to_f / (c - 1) | |
pd = dense(w, de) | |
l1 = de(terras121(pd).to_s(2)) | |
pe = entropy(w, (de * w).to_i) | |
l2 = de(terras121(pe).to_s(2)) | |
f.puts(([x] + l1 + l2).join("\t")) | |
} | |
f.puts('eof') | |
f.puts('plot \\') | |
vs[1..-1].each_with_index \ | |
{ | |
|x, i| | |
f.puts("$dat using (#{i * 1000} + column('x')):(column('#{x}')) with line title '#{x}',\\") | |
} | |
f.puts("0.5 lw 2") | |
f.close |
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