PackageCom.qiyuan.util;ImportJava.math.BigDecimal;ImportJava.math.RoundingMode;ImportJava.text.DecimalFormat; Public classDecimalutils {/*** (1) to keep the specified number of decimal digits by rounding, the number of digits is not sufficient for 0

The output retains the floating point with 12 decimal digits and the 12 decimal digits.
Total time limit: Ms memory limit: 65536kB
Description
Read a double-precision floating point number, retain 12 decimal places, and output this

This chapter describes how to achieve a number of two-bit decimal effect, if the number of the original number of decimal places less than two, then the missing automatically fill 0, this is also for the unified effect, first look at code examples:

Performing Division for the number of plastic-C + + languages will be performed on the floor except for the number of parts. such as int a=15/10; The result of a is 1.
The same is true in Java, so the two int data division needs to force type

Sometimes we need to output a double that determines the number of decimal digits, and we can first introduce the following header file:#include The output is then done in the following ways: Double 8.66666 ; fixed 2) Or: if (Aid% (int0

ObjectiveLook at the title is not think this is a very simple problem, I think so at the beginning, but the actual situation, in various cases we have tested, found that many of the actual situation can not be unsatisfactory.Method analysisWhat you

This example describes how Python discards decimal digits through the floor function. Share to everyone for your reference. The specific analysis is as follows:
In Python, you can discard the decimal digits after the floating-point number by using

When you do a project, you need to restrict the contents of the input box to enter only two decimal places.First of all to limit the number can only be entered, this is very good implementation, using the following code can be Required: This input

Date format:The date format queried in the database may not be the format we want to display, such as timestamp display to the nanosecond level. Here are two of the kinds I used.Two ways to specify the date format: the first, the SQL to convert, and

For some decimal point after a number of floating-point numbers, we may only need to retain 2 bits, but JS does not provide such a direct function, so we have to write the function to implement this function, the code is as follows:
Copy Code

Given the decimal number represented by an array, add one. The result is still represented in a decimal array. Here, we mainly note that the highest bit (digit [0]) still has an incoming bit, that is, overflow.
Given a non-negative number

>>>import JSON>>>d = {' A ': 0.333333333, ' B ': 0.445444444, ' C ': 0.293}>>>json.dumps (d)Get' {' A ': 0.333333333, ' C ': 0.293, ' B ': 0.445444444} 'And we expect to get' {' A ': 0.33, ' C ': 0.29, ' B ': 0.45} 'Here are the

This gadget class is mainly used for numerical rounding, numeric format output, very simple, if you want to further research, please consult the BigDecimal or decimalformat API,BigDecimal. The Rounding method in Setscale (number of digits, rounding

one , 1.2.toFixed (2)The floating-point number is rounded to set the numeric value of the specified decimal placetwo , 2.toFixed (2)Integer, but in JS it is considered an object name so that it cannot be usedThird, "1.2". ToFixed (2)Because the

number of decimal digits reserved
Math.Round (x*100)/100Rounding a floating-point number to 2 digits after the decimal pointCan be implemented to retain two decimal places
Force two decimal places to be retained

public static list setdatasec (list instno) {list result = new arraylist (); String[] Mon ={"2014-01", "2014-02", "2014-03", "2014-04"};int[] flag ={1,2,3,4,5}; list instnosub5 = new arraylist (); for (int i=0;iDecimalFormat df=new DecimalFormat (".

A few recent experiments, some of which require that the data submitted by the form be converted to double, is a simple function that is straightforward and straightforward double.parsedouble (Request.getparameter ("Chinese"). Trim ()) can be

Javascript implementation text box can only enter two decimal digits, do not display other characters entered, compatible with ie, firefox is worth your reference.
script function checkNumber (e, txt) {var key = window. event? E. keyCode: e. which;

Today, in C #, you encounter a problem that requires you to convert a double to a string display, requiring you to keep the decimal digits.Check out the relevant articles on the InternetSpecific as follows:Double temp=3.1415926;F Fixed point:string

C # formatting strings is also very convenient, has been useless before, there is no fate to understand[CSharp]View PlainCopyprint?
Double dvalue = 95.12345;
int ivalue = 10000;
string strvalue = "95.12345";
string result = "";

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