re = /^(\[(\d+|(?:\d*\.\d+))(?:,\s*(\d+|(?:\d*\.\d+)))*\])\s*[\*x]\s*(\[(\d+|(?:\d*\.\d+))(?:,\s*(\d+|(?:\d*\.\d+)))*\])$/m
str = '[0]*[1]
[2,3]*[4,5]
[6, 7, 8] * [9, 10, 11]
[12,13, 14]* [15, 16,17]
[0]x[1]
[2,3]x[4,5]
[6, 7, 8] x [9, 10, 11]
[12,13, 14]x [15, 16,17]
[1.2, 3, 4.5] x [6, 7.8, 9]'
# 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