数据结构期末作业 带括号的算术表达式求值-Data structure with brackets at the end of the arithmetic operations for the value of expression

表达式求值，通过栈，计算加减乘除，可以做小数，整数负数等运算-Expression is evaluated, through the stack, calculate addition and subtraction multiplication and division, can do decimals, negative integers such as computing

中缀表达式转换为后缀表达式,并且求取表达式值，而且能够输出表达式-Infix expression convert to suffix expression

Aviator是一个高性能、轻量级的java语言实现的表达式求值引擎，主要用于各种表达式的动态求值。现在已经有很多开源可用的java表达式求值引擎-Aviator is a high performance, lightweight Java language expression evaluation engine, mainly used for dynamic evaluation of various expressions. Now there are many open source