re = /\d{1}[A-Z]{1}-[A-Z]{1}[0,2,4,6,8]{4}-[1-9]{1}[0-2]{0,1}/m
str = '1A-B1234-19
1A-B0204-12
1A-B0204-c
11-B0204-12
1A-B2228-0
1A-B2228-1'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html