简单的算术表达式求值，是数据结构的课程设计。 运用了栈的一些基本操作，可以进行算术运算！-Simple arithmetic expression evaluator is the data structure of the curriculum design. The use of the stack some of the basic operations, arithmetic operations can be carried out!

数据结构编程示例，包含表达式求值，多项式计算，哈弗曼，内部排序，停车场，长整数等常用功能-Data structure programming examples, including expression, polynomial, Huffman, internal sorting, parking, long integers and other common functions