polyfill calculator

defMUL_DIV (exp):#Calculate multiplication whileTrue:ret= Re.search ('[\d\.] +[\*\/]-? [\d\.] +', exp)ifRet:atom_exp=Ret.group () Res=atom_cal (ATOM_EXP) exp=exp.replace (Atom_exp, res)Else: returnFOMAT_EXP (exp)defFOMAT_EXP (exp):#after calculating the multiplication, the unified symbolExp=exp.replace ('--','+') Exp=exp.replace ('-+','-') Exp=exp.replace ('++','+') Exp=exp.replace ('+-','-') returnadd_sub (exp)defADD_SUB (exp):#calculate add and SubtractRet=re.findall ('[\-\+]

(atom_exp,res)Else: returnExpdefadd_sub (exp): RET= Re.findall ("[+-]?\d+ (?: \. \d+)?", exp)#Take out the numbers and symbols in front of the numbers FindAll returns a list to find all itemsExp_sum =0 forIinchRet:exp_sum= Exp_sum + float (i)#The string is taken out. returnExp_sumdefCAL (exp): Exp=MUL_DIV (exp) Exp=Format (exp) exp_sum=add_sub (exp)returnExp_sumdefMain (exp): Exp= Exp.replace (" ","") whileTrue:ret= Re.search ("\([^()]+\)", exp)ifRet:inner_bracket=Ret.group ()

This JSP page is designed to implement the ability to submit and receive data on the same page .There are a lot of shortcomings in this small program, I hope you will criticize.The implementation results are as follows:How to implement a simple calculator with JSP (c)

.]*] \) ', S_MATCH_STR). Group (1) s = S.replace (S_match_str, S_match_str_match) print (s) Else:print ("Call processing%s"%s_match_str) S_match_str_str=re.search (' \ ([+\-*/0-9.] *) \) ', s). Group (1)Ret=handler_expression (s_match_str_str) s = s.replace (S_match_str, str (ret)) print (s) Else:flag=false return s# no_braces_result=hadler_braces (' ( -1+ (2-5* ( -1)) * (2-5)) # Result=handler_expressi On (no_braces_result) # print (result) if __name__ = = ' __main__ ': While tru

　　JS Simple Calculator

1. Environment Construction Link: http://www.jianshu.com/p/094928ac0b732. qt Create CanvasNow you need to complete the adder, two numbers A and B are added, and the numbers A and B are entered by digital. Drag the element to complete the interface, such as. On the left there is a simple addition input and output display box, click on the calculation button below to start the calculation, to the right there is an output historical calculation of the page. You can see the name of each dragged elem

jquery Implementation Calculator

After Baidu, see the same shoes hint to modify the \phpstudy\apache2\conf\ in the httpd.conf file, the code is as follows Copy Code code as follows: ServerAdmin webmaster@163.com DocumentRoot "D:\www" ServerName ymywz.com Options Indexes FollowSymLinks AllowOverride All Order Allow,deny Allow from all Note: As a result of the code conflict problem, please change the above double title number to a single title number When you restart Apache after adding the

Import Java.util.Arrays; Import Java.util.Scanner; Simple calculator/infix expression suffix expression, derived results for reverse Polish number output//e.g. input: (11+2.2) *3.1+ (30*45)-((1.1+23) *3.3)/5.2//Convert to suffix expression: 11 2.2 + 3.1 * 30 45 * + 1.1 23 + 3.3 * 5.2////Output Result: 1375.6257692307693 public class Turnrpn {public static void main (string[] args) { Char[] s = GetChar (); String expression = getexpression (

, 0, WX. EXPAND), (button0, 0, WX. EXPAND), (Buttondot, 0, WX. EXPAND), (buttonequ, 0, WX. EXPAND), (buttonplus, 0, WX. EXPAND)] Buttoncls.bind (WX. Evt_button,self. ONBUTTONCLS) Buttonbck.bind (WX. Evt_button,self. ONBUTTONBCK) Buttonclose.bind (WX. Evt_button,self. Onbuttonclickclose) Button0. Bind (WX. Evt_button,self. ONBUTTONCLICK0) button1. Bind (WX. Evt_button,self. ONBUTTONCLICK1) button2. Bind (WX. Evt_button,self. OnButtonClick2) Button3. Bind (WX. Evt_button,self. ONBUTTONCLICK3) Butt

I. Overview of issues Using C language to implement a simple calculator, can be used to achieve the function of subtraction noun Explanation: function pointer: A pointer that is used to point to a function Array of function pointers: an array containing multiple function pointers callback function: A function, if the parameter has a function pointer, then this function is the callback function two, problem analysis This problem can be implemented wit

This article illustrates a method of implementing a simple calculator based on JSP. Share to everyone for your reference. The implementation methods are as follows: index.jsp Copy Code code as follows: String path = Request.getcontextpath (); String basepath = request.getscheme () + "://" +request.getservername () + ":" +request.getserverport () +path+ "/"; %> Result.jsp for displaying results Copy Code code as follows:

Personal Income Tax Calculator cellpadding=4 cellspacing=1 bgcolor= "#D9D9D9" style= "FONT-SIZE:9PT; Font-family: Song Body ">Style= "FONT-SIZE:9PT; font-family: XXFarEastFont-arial > Please enter your monthly income: Style= "FONT-SIZE:9PT; Font-family: Song Body "> Yuan ">Style= "FONT-SIZE:9PT; Font-family: Song Body "> Yuan 1000) nbsp;nbsp;nbsp;nbsp;>

JS implementation of the calculator, the following code: Style= "Background-color: #C0C0C0; height:291px; " >

JS Calculator code: [Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform] Description JavaScript eval () function Definitions and usage The eval () function computes a string and executes the JavaScript code in it. return value The value, if any, obtained by calculating the string. Description The method accepts only the original string as a parameter, and if the string argument is not the ori

Copy Code code as follows: PS: Here again for you to recommend two online calculator this site, are implemented with JS, and powerful, I believe that in-depth understanding of JavaScript math and web design will help: Online Standard calculator:http://tools.jb51.net/jisuanqi/jsq Online Science calculator:Http://tools.jb51.net/jisuanqi/jsqkexue

This paper illustrates the implementation of JS simple calculator. Share to everyone for your reference. The implementation methods are as follows: Copy Code code as follows: I hope this article will help you with your JavaScript programming.

back and forth 1 times, that is, the daily need to take 2 times the same route of the subway; Write a program to help Xiao Ming complete the total cost of taking the subway every month . Here is the code implementation: #-*-coding:utf-8-*-Print ("* * * Subway car consumption calculation Calculator * * * * * * * * * * * * * * * * * * * distance = input (" Please enter your travel distance greater than 0: ") #输入每天去公司乘坐地铁的距离 (km) if di Stance ==0:print

Looking for a long time, found little information on the internet, so want to write their own hands, slowly found many problems, their own algorithm, write a short calculation formula is OK, long on the hang, and then long I am afraid to panic. One day do MySQL suddenly found that the original MySQL function so powerful, you can directly calculate the string ... Haha, this will be happy. The code is also super simple to do an AJAX calculator There'

Idle to do nothing, learn to learn the development of graphical interface, maybe when you write something, there will be very practical value. Never wondered how to get other property values, such as text boxes, when the button was clicked. Today, I saw the horse soldier Teacher's video, through a façade mode method, add the required classes to their own member variables, such as the text box belongs to the class injected into the button listener class properties, you can easily get all the publ