Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign -, non-negative integers and empty spaces . You may assume that the given expression is…
Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign -, non-negative integers and empty spaces . You may assume that the given expression is…
2018-09-27 22:02:36 一.Basic Calculator II 问题描述: 问题求解: sign用来保存前一个符号,用num来记录数字,如果碰到一个符号或者到达结尾,则需要进行入栈操作,这个时候需要结合符号进行相应的运算. public int calculate(String s) { if (s == null || s.length() == 0) return 0; int res = 0; Stack<Integer> stack = new Stack<&…
Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer division should truncate toward zero. You may assume that the given ex…
转自 http://blog.chinaunix.net/uid-26959241-id-3207711.html 详细文档请 man bc 在windows下,大家都知道直接运行calc,(c:\windows\system32\calc.exe),请可以打开计算器. 注: calculate vt.&vi. 计算:calculator n. 计算器.calc就是这个计算的简写.Ca在化学中是代表钙元素,calcium 钙(20号元素,符号Ca).两者有什么联系呢?calculate 来自c…
