petertseng

The first floor contains a 1 generator, a 2 generator, a 3 generator, a 4 generator, a 5 generator, a 6 generator, a 7 generator, a 8 generator, a 9 generator, a 10 generator, a 11 generator, a 1-compatible microchip, a 2-compatible microchip, a 3-compatible microchip, a 4-compatible microchip, a 5-compatible microchip, a 6-compatible microchip, a 7-compatible microchip, a 8-compatible microchip, a 9-compatible microchip, a 10-compatible microchip, and a 11-compatible microchip.
The second floor contains nothing relevant.
The third floor contains nothing relevant.
The fourth floor contains nothing relevant.

petertseng

require "crypto/md5"

hash = "0" * 32
zeroes = Array.new(32, 1)

ROWS = 8
almost = 0
hashes = Array.new(ROWS, "")
hashes[0] = hash

petertseng

# http://norvig.com/ipython/xkcd1313.ipynb
# http://nbviewer.jupyter.org/url/norvig.com/ipython/xkcd1313.ipynb
#
# http://norvig.com/ipython/xkcd1313-part2.ipynb
# http://nbviewer.jupyter.org/url/norvig.com/ipython/xkcd1313-part2.ipynb
#
# Only implemented the 'covers' optimisation in part 2
# no branch and bound.
# no repetition characters or pairs

petertseng

require 'set'

def heuristic(start, goal)
  {
    start: 5, # Not given in the diagram but probably not important.
    a: 4,
    b: 2,
    c: 4,
    d: 4.5,
    e: 2,

petertseng

if ARGV.empty?
  puts "usage: #{$PROGRAM_NAME} offset [file] (or stdin)"
  exit 1
end

offset = ARGV.shift.to_i

ARGF.each_line { |l|
  unless l.include?('-->')
    puts l

petertseng

require 'json'
require 'set'

# Create a personal access token at https://github.com/settings/tokens
# It needs only one scope: read:org ("Read org and team membership").
TOKEN_FILE = 'secrets/token.txt'.freeze
SLEEP_TIME = 2

global_name = 'track-maintainers'.freeze

petertseng

#!/usr/bin/env ruby

if ARGV.empty?
  puts "usage: #{$PROGRAM_NAME} dir"
  Kernel.exit(1)
end

track = File.basename(File.dirname(File.realpath(ARGV[0])))

def glob(*components, except: [])

petertseng

class ParseError < StandardError; end

def object(s, i)
  o = {}
  state = :key
  key = nil
  j = i + 1

  while (c = s[j])
    case state

petertseng

require 'json'
require 'time'

# Create a personal access token at https://github.com/settings/tokens
# It needs NO scopes.
# In fact, you could just not use a token, but then you get rate-limited to 60 an hour instead of 5000 an hour.
TOKEN_FILE = 'secrets/token.txt'.freeze
SLEEP_TIME = 2

CACHE = 'cache'.freeze

petertseng

def ops(nums, result, sign = 1)
  case nums.size
  when 0, 1
    result == (nums[0] || 0) * sign ? [[nums[0]].compact] : []
  else
    n1, n2 = nums.first(2)
    plus = ops(nums.drop(1), result - n1 * sign, 1).map { |r| [n1, :+] + r }
    minus = ops(nums.drop(1), result - n1 * sign, -1).map { |r| [n1, :-] + r }
    concat = ops([n1 * 10 + n2] + nums.drop(2), result, sign)
    plus + minus + concat