一个java源代码包，其中包括快速排序，队列和后缀表达式的计算，XML生成程序，为一个解析XML文件程序做了书价格的计算，是后缀表达式计算，中缀转后缀.-A Java source code package, including quick sort, queues, and the calculation of postfix expression, XML generator, as a parse the XML file application to do the calculation of the book price, is a postfix expression calculation, infix suffix.