说明：  兰博和提莫闲聊之后，回归到了他们的正题，约德尔人的未来。 说起约德尔人的未来，黑默丁格曾经提出了一个约德尔测试，将约德尔人的历史的每个阶段都用一个字符表达出来。(包括可写字符,不包括空格。)。然后将这个字符串转化为一个01串。转化规则是如果这个字符如果是字母或者数字，这个字符变为1,其它变为0。然后将这个01串和黑默丁格观测星空得到的01串做比较，得到一个相似率。相似率越高,则约德尔的未来越光明。 请问:相似率为多少？
(Rambo and tyre talked back to their topic, the future of jor. Speaking of the future of the people of the Jordan, he had put forward a test of the Jordan, which expressed every stage of the history of the people of the Jordan in one character. (including a writable character, not including space. ). Then the string is converted to a 01 string. The transformation rule is that if the character is alphabetic or numeric, the character becomes 1 and the other becomes 0. Then we compare the 01 strings with the 01 strings obtained from the black stars, and get a similar rate. The higher the similarity, the brighter the future of Joseph del. Excuse me: what is the similarity rate?)