the sum of all primes or evens in the noise

source.rb

ans = 0;
tokens = "2GSD#13x8xU343%^DGF1@22@".scan /\d+/

def prime? op
  divs = 0;

  (1..op).each do |op2|
    case op % op2
      when 0
        divs += 1;
    end
  end

  if divs == 2
    true;
  end
end

tokens.each do |t|
  t = t.to_i;
  if t != 0 # zeros not allowed
  # it's a 1s and everyone above party!
    if prime?(t) || t % 2 == 0 # prime or even
	  ans += t;
    end
  end
end

puts ans;