bracket_matcher.rb

def matching_brackets?(arg)
  opener_symbols = ["{", "(", "["]
  closer_symbols = ["}", ")", "]"]
  openers = Hash.new(0)
  closers = Hash.new(0)
  openers['('] = arg.scan(/\(/).length
  openers['['] = arg.scan(/\[/).length
  openers['{'] = arg.scan(/\{/).length
  closers[')'] = arg.scan(/\)/).length
  closers[']'] = arg.scan(/\]/).length
  closers['}'] = arg.scan(/\}/).length
  if openers['('] != closers[')']
    return false
  end
  if openers['{'] != closers['}']
    return false
  end
  if openers['['] != closers[']']
    return false
  end
  return true
end