SEO 搜索引擎优化；搜索引擎目前已经是各大搜索网站的重中之重。-SEO search engine optimization search engine is already the top priority of the major search sites.

通过Java实现索引优先最小队列并附带algs4包，他是一个很有用的例子(Through the Java implementation of the index priority minimum queue with algs4 package, he is a very useful example)