Created
May 18, 2018 01:31
-
-
Save vznvzn/8d3bd5f7cc825cd0896fa02d37112589 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
def f1(n) | |
n = (n * 3 + 1) / 2 while (n.odd?) | |
n /= 2 while (n.even?) | |
return n | |
end | |
def f2(n) | |
return n.odd? ? (n * 3 + 1) / 2 : n / 2 | |
end | |
def avg(l) | |
return 0 if (l.empty?) | |
t = 0 | |
l.each { |x| t += x } | |
return t.to_f / l.size | |
end | |
def total(l) | |
t = 0 | |
l.each { |x| t += x } | |
return t | |
end | |
def h(n, l0, l1, m, s) | |
ns = n.to_s(2) | |
nl = s ? ns.length : 1.0 | |
l1.concat(ns.split(/0+/).map { |x| x.length.to_f / nl }.select { |x| x >= m}) | |
l0.concat([ns.split(/1+/)[1..-1]].compact.flatten.map { |x| x.length.to_f / nl }.select { |x| x >= m}) | |
end | |
def count(x) | |
n = n1 = x['n'] | |
l = [n] | |
while (n >= n1 && n != 1) | |
n = {'packed' => true, 'unpacked' => false}[$w] ? f1(n) : f2(n) | |
l << n | |
end | |
cm = (0...l.size).max_by { |x| l[x] } | |
return l[0..cm] | |
end | |
def uniq(l) | |
a = {} | |
l.each { |x| a[x['n']] = x } | |
$stderr.puts({'ls1' => l.size, 'ls2' => a.size}.inspect) | |
return a.values | |
end | |
# $w = 'packed' | |
$w = 'unpacked' | |
l = uniq(File.open('tmp/mixdb.txt').readlines.map { |x| Kernel.eval(x) }) | |
l = l.sort_by { |x| x['cm'] }.reverse | |
l1 = [] | |
s, m = [false, 9] | |
s, m = [true, 1.0 / 20] | |
count(l[ARGV[0].to_i]).each_with_index \ | |
{ | |
|n, c| | |
h(n, [], l1, m, s) | |
l1.sort! | |
l1.each_with_index \ | |
{ | |
|x, j| | |
puts([j.to_f / (l1.size - 1), x, c].join("\t")) | |
} | |
puts | |
} | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment