Remember struggling with reverse Polish notation on your first scientific calculator? 还记得在您的第一台科学计算器上用逆波兰表示法奋斗的经历吗?
Postfix notation is also known as reverse Polish notation ( RPN) and is commonly used because it enables easy evaluation of expressions. 后缀表示法也称逆波兰表示法(reversePolishnotation,RPN),因其使表达式求值变得轻松,所以被普遍使用。