How to implement a basic mathematical expression calculator in JavaScript with MathCalc:可以参考现有的 MathCalc 写法 Parse With The Shunting Yard Algorithm Using JavaScript:简略地讲述如何将中缀表达式转换成 RPN,博主的另一篇文章 Evaluate A Reverse Polish Notation Equation With JavaScript 讲解如何基于后缀表...
}returnn; }/*计算并返回结果*/doublegetAns(doublea,doubleb,charc) {switch(c) {case'+':returnb+a;case'-':returnb-a;case'*':returnb*a;case'/':returnb/a; } }/*shunting-yard*/doubleshunting(stringstr) { stack<double>iStk; stack<char>strStk;for(inti =0; i <str.length();) ...
大致上伪代码是这样: /*Shunting Yard AlgorithmIF it's an operand THEN push into operand stackIF operand stack has only 1 item THEN continue to next tokenELSE IF operand stack has more than 2 items THENIF operator stack has '+', '-', '/', '*' at topIF next token is also an opera...
中缀表达式转换为后缀表达式(逆波兰表达式),即调度场算法(shunting yard algorithm) 1.建立运算符栈用于运算符的存储,此运算符遵循越往栈顶优先级越高的原则。 2.预处理表达式,正、负号前加0(如果一个加号(减号)出现在最前面或左括号后面,则该加号(减号) 为正负号)。 3.顺序扫描表达式,如果当前字符是数字(优先...
The shunting yard algorithm is a simple technique for parsing infix expressions containing binary operators of varying precedence. It was first described by Edsgar Dijkstra in 1961. In general, the algorithm assigns to each operator its correct operands, taking into account the order of precedence....
"("。21. 遇到 ")"，从操作数堆栈弹出元素进行运算，直到遇到匹配的 "("，并弹出 "("。处理至 token vector 结束，检查堆栈状态，执行剩余运算，最后从操作数堆栈取出顶部元素，即为最终结果。总结，Shunting Yard Algorithm 通过堆栈操作实现操作符和操作数的正确处理，确保了表达式的准确计算。
After all this, the algorithm has grown a bit, and is a little trickier to get right in all the corner cases—but it’s still pretty simple, andcertainlyless work than a full-blown syntax-directed parser! In my opinion, it’s a shame that the shunting-yard algorithm isn’t more widel...
网络调度场算法 网络释义 1. 调度场算法 中缀表达式转换为后缀表达式(逆波兰表达式),即调度场算法(shunting yard algorithm)1.建立运算符栈用于运算符的存储,此… www.cnblogs.com|基于6个网页
此函数可用于计算写为字符串(字符数组)的方程。 该函数的基础是Shunting yard算法,如在C#中示例: https : //rosettacode.org/wiki/Parsing/Shunting-yard_algorithm 调车码算法是一种解析数学表达式的方法在后缀表示法中以后缀表示法指定。 例子结果= EvalEquation('1 + 2 /(2 * 3)'); 显示(结果) 1.3333 ...
Jump to:navigation,search {- Reference implementation of shunting yard algorithm. Requires: Data.Char, Data.List. This implementation is not error-tolerant; an exception will occur on any incorrect input. Note: Unary + and - have precedence higher than * and / but lower than ^. -}data(Numa...