help with decimals

Test instructions: input integers A and B, (0Analysis: If each time the division is simulated, the divisor once appeared. Since the maximum number is 3000, an array is opened to save the order in which each dividend appears.1#include 2#include 3#include 4#include 5#include 6 using namespacestd;7 8 intvis[3005];9 Ten intMain () { One intb; A while(cin>>a>>b) { -memset (Vis,0,sizeof(Vis)); - intnum=1; thequeueint>Q; - intn=a%b; -Q.push (A/b); - while(!Vis[n]) { +v

JS rounding function toFixed (), the parameter is the number of digits reserved decimal. Number of digits reserved for decimals

function Fmoney (s, N) {--s represents the amount that needs to be converted--n means keeping several decimalsn = n > 0 n s = parsefloat ((s + ""). Replace (/[^\d\.-]/g, ""). ToFixed (n) + "";var L = s.split (".") [0].split (""). Reverse (), R = S.split (".") [1];t = "";for (i = 0; i T + = L[i] + ((i + 1)% 3 = = 0 (i + 1)! = L.length? "," : "");}Return T.split (""). Reverse (). Join ("") + "." + R;}JS amount conversion Three bits plus comma separated reserved

11. He's smarter ...2 37 82. Friends who will use new things .... But we need ie5.5+.only supported. 9 Ten - the3after summarizing, I wrote a general method of JavaScript rounding with multiple digits. - - //num represents the number to be rounded, and V represents the number of decimal digits to keep. - functiondecimal (NUM,V) + { - varVV = Math.pow (10, V); + returnMath.Round (NUM*VV)/vv; A}js-Rounding Decimals

Python is the correct method for Division operations on decimals. Calculate a formulaCopy codeThe Code is as follows:A = 1B = 2C = 3Print c * (a/B)The running result is always 0. After repeated check and splitting, it is found that in Python, the first integer can only be an integer.That is, the result of dividing a by B is always 0. You only need to change the number of a or B to a floating point number.Copy codeThe Code is as follows:A = 1B = 2C = 3

How does MySQL float save decimals? I set a field type to float, but insert a decimal number and save it in the database as an integer. I look at the net to change float to float (5,2) can save two decimal places, no more than 5 digits, Where is this 5,2 set Ah, I changed the length to 5, 2 on the error ------Solution-------------------- Can I change the length of the phpmyamin? ------Solution-------------------- CREATE TABLE Test (float_column floa

thanintegerbe big. Example1. Floor() ExamplePHPEcho Floor(4.3);//4 Echo Floor(9.999);//9?>Third,round-Rounding out the floating-point numbersfloat round(floatVal [,int precision]) Returns the result of rounding Val based on the specified precision precision (number of digits after decimal point). Precision can also be negative or 0 (the default value). Example1.round() ExamplePHPEcho round(3.4);//3 Echo round(3.5);//4 Echo round(3.6);//4 Echo round(3.6, 0);//4 Echo round(1

Recently, did a large number of Ali to add the programming problem. The topic is as follows:Enter a number of two string types, such as 12.223 11, to determine whether the input string is legal. Valid outputs True and the addition result (true 23.223), the output false "" "is illegal.The period has been modified several times, in the judgment of the Legality of the exclusion of such as. 212 and 122. This error (errors that occur except for numbers and. also excluded).The main idea is to separate

Atoi: A function that converts a string to the corresponding number How decimals are converted to binary. The decimal fraction part, multiplied by 2, if the product is less than 1, the standard is 0, continues to multiply by 2; If the product is greater than 1, the standard is 1, the difference of the product minus 1 is multiplied by 2. So go on until the difference is 0. For example 0.625,→1.25, write down 0.1; 1.25-1=0.25,0.25*2=0.5, write down 0.1

This example describes how PHP uses the Number_format function to intercept decimals. Share to everyone for your reference, specific as follows: You know you can use PHP's Number_format () function to group numbers by thousand. But it rounded up the numbers, so is there a way to get it to discard the decimal number immediately after the reserved bit without rounding? Please don't worry, and listen to me carefully, if you want to keep two decimal digi

Recently in writing a small algorithm, need to deal with decimals, the first thought is to determine whether there is a decimal point in the number of decimal points to the end of several .... It's too much trouble to write a half, because a lot of value to deal with too much trouble ... I finally wrote this to use, and I feel better. public static Boolean isNumber1 (String str) {//Judge integral return str.matches ("^\\d+$$"); } public stat

Copy codeThe Code is as follows:$ (Function (){// Only numbers (excluding decimals) can be entered in the text box, and the input method and pasting are blocked.$. Fn. integer = function (){Certificate (this).css ("ime-mode", "disabled ");This. bind ("keypress", function (e ){Var code = (e. keyCode? E. keyCode: e. which); // compatible with Firefox IEIf (! $. Browser. msie (e. keyCode = 0x8) {// you cannot use the backspace key under Firefox.Return;}

1. Discard the fractional part, preserving the whole number of partsJs:parseint (value)2. Rounding up, with decimals on the integer part plus 1Js:Math.ceil (value)3, rounded.Js:Math.round (value)4, rounding downJs:Math.floor (value)5, rounded to a number that specifies the number of decimal digits.var num = new number (3333333333.67);num.tofixed (number of digits)For example, the number of digits is 1 and the result is 3333333333.7.Copyright NOTICE:

In order to give the visitors more clear and clear figures in the quotation, so need to use the number format, there are two methods, one of their own write function, the other of course is the system comes with, in fact, I prefer the system comes with. First come the system simple: String Number_format (float number [, int decimals [, String Dec_point, String thousands_sep]): View Code 1 Echo number_format (' 169856420 '); The output will be: 169,85

Because work requires PHP to generate 0~1 random decimals, previously wrote a "PHP generation 0~1 Random Decimal method", based on Mt_rand ()And Mt_getrandmax ()Realize. Later, a netizen commented that php native method lcg_value () can realize 0~1 random decimal generation. Lcg_value description float Lcg_value (void) Lcg_value () returns a pseudo-random number with a range of (0, 1). This function combines two co-generators with a period of 2^31-8

Why is there an error in the computer with decimals? This section describes the machine number, code system, floating point number, and Number System Conversion Problems, and error code system. 1. Commonly Used Number System Decimal 0 ~ 9 Octal 0 ~ 7 Binary 0 ~ 1 Hexadecimal 0 ~ F 2. Convert the decimal to the hexadecimal notation Method: divide by the base to obtain the remainder Inverse 3. 2 in hexadecimal notation 8 to hexadecimal notation Binary

Only numbers can be entered$ ('. Text '). KeyUp (function () {$ (this). Val ($ (this). Val (). replace (/^0+/g, ""). Replace (/[^0-9]/g, "))})Enter numbers and decimals (accurate to two digits after the decimal point)$ ('. Text '). KeyUp (function () {var number = $ (this). Val (). replace (/^\./g, ""). replace (/[^\d.) /g, ""). replace (".", "$#$"). replace (/\./g, ""). replace ("$#$", "."). Replace (/^ (\-) * (\d+) \. ( \d\d). *$/, ' $1$2.$3 ')$ (th

Simulate the process of Division on the draft paper with big questions → #include Repeating decimals The decimal expansion of the fraction 1/33 is, where the is used to indicate that the cycle 03 repeats indefinitely with no intervening digits. in fact, the decimal expansion of every rational number (fraction) has a repeating cycle as opposed to decimal expansions of irrational numbers, which have no such repeating cycles.