ruby-quiz-2024-solver.rb (original) (raw)
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
[ Show hidden characters]({{ revealButtonHref }})
| # Solver for https://ruby-quiz-2024.storesinc.tech/ |
|---|
| require 'tempfile' |
| def solve(number, quiz_src, expected_error) |
| threads = [] |
| answers = {} |
| Tempfile.create("temperror_#{number}") do |error_file |
| quiz_src.size.times do |i |
| threads << Thread.start do |
| Tempfile.create("#{error_file.path}_#{i}.rb") do |modified_quiz_file |
| modified_quiz_file.write "#{quiz_src[..-(i+1)]}#{quiz_src[(quiz_src.size-i+1)..]}" |
| modified_quiz_file.flush |
| success = system("ruby #{modified_quiz_file.path} 2>#{error_file.path}") |
| if !success && File.read(error_file).include?(expected_error) |
| p 'resolved!' + '-' * 100 |
| puts(answers[i] = File.read(modified_quiz_file)) |
| File.write("#{number}_answer.rb", answers.values.join("\n")) |
| p 'resolved!' + '-' * 100 |
| end |
| end |
| (["\n"]+(' '..'~').to_a).each do |char |
| Tempfile.create("#{error_file.path}_#{i}#{char}.rb") do |modified_quiz_file |
| modified_quiz_file.write "#{quiz_src[..i]}#{char}#{quiz_src[i+1..]}" |
| modified_quiz_file.flush |
| success = system("ruby #{modified_quiz_file.path} 2>#{error_file.path}") |
| if !success && File.read(error_file).include?(expected_error) |
| p 'resolved!' + '-' * 100 |
| puts(answers["#{i}#{char}"] = File.read(modified_quiz_file)) |
| File.write("#{number}_answer.rb", answers.values.join("\n")) |
| p 'resolved!' + '-' * 100 |
| end |
| end |
| end |
| end |
| end |
| end |
| threads.each(&:join) |
| end |
| if ARGV[0] |
| quiz_src = File.read("#{ARGV[0]}_quiz.rb") |
| expected_error = File.read("#{ARGV[0]}_error.rb") |
| solve(ARGV[0], quiz_src, expected_error) |
| else |
| %w[1 2 3 4 5 6 7 8 9 a b c].each do |number |
| quiz_src = File.read("#{number}_quiz.rb") |
| expected_error = File.read("#{number}_error.rb") |
| solve(number, quiz_src, expected_error) |
| end |
| end |