fractions

In JavaScript, is there any way to convert a decimal number (such as 0.0002 ) to a fraction represented as a string (such as " 2/10000" )? If a function called decimalToFraction had been written for this purpose, then decimalToFraction(0.0002) would return the string "2/10000" . You can use Erik Garrison's fraction.js library to do that and more fractional operations. var f = new Fraction(2, 10000); console.log(f.numerator + '/' + f.denominator); To to do .003 you can just do var f = new Fraction(.003); console.log(f.numerator + '/' + f.denominator); Alex Wayne A little googling with the term

I am building a calculator and want it to automatically convert every decimal into a fraction. So if the user calculates an expression for which the answer is "0.333333...", it would return "1/3". For "0.25" it would return "1/4". Using GCD, as found here ( Decimal to fraction conversion ), I have figured out how to convert any rational, terminating decimal into a decimal, but this does not work on any decimal that repeats (like .333333). Every other function for this on stack overflow is in Objective-C. But I need a function in my swift app! So a translated version of this ( https:/

say we have fraction 2/4, it can be reduced to 1/2. Is there javascript function that can do the reducing? // Reduce a fraction by finding the Greatest Common Divisor and dividing by it. function reduce(numerator,denominator){ var gcd = function gcd(a,b){ return b ? gcd(b, a%b) : a; }; gcd = gcd(numerator,denominator); return [numerator/gcd, denominator/gcd]; } reduce(2,4); // [1,2] reduce(13427,3413358); // [463,117702] No, but you can write one yourself fairly easily. Essentially you need to divide the top and bottom parts of the fraction by their 'Greatest Common Denominator'... Which you

In C++, When I calculate 2/3, it will output decimal values, how can I just get the original format (i.e.g 2/3) instead of 0.66666667 Thanks You can't. You would need to write a class dedicated to holding rational numbers (i.e. fractions). Or maybe just use the Boost Rational Number library . If I understand correctly, you have a floating point number (a float or double type variable), and you'd like to output this value as a fraction. If that is the case, you need to further specify your question: A FP number is a fraction, by definition: A FP number consists of two integers, a mantissa m and

It's important to note that I'm not looking for a rounding function. I am looking for a function that returns the number of decimal places in an arbitrary number's simplified decimal representation. That is, we have the following: decimalPlaces(5555.0); //=> 0 decimalPlaces(5555); //=> 0 decimalPlaces(555.5); //=> 1 decimalPlaces(555.50); //=> 1 decimalPlaces(0.0000005); //=> 7 decimalPlaces(5e-7); //=> 7 decimalPlaces(0.00000055); //=> 8 decimalPlaces(5.5e-7); //=> 8 My first instinct was to use the string representations: split on '.' , then on 'e-' , and do the math, like so (the example is

I was wondering how to convert a decimal into a fraction in its lowest form in Python. For example: 0.25 -> 1/4 0.5 -> 1/2 1.25 -> 5/4 3 -> 3/1 You have two options: Use float.as_integer_ratio() : >>> (0.25).as_integer_ratio() (1, 4) (as of Python 3.6, you can do the same with a decimal.Decimal() object .) Use the fractions.Fraction() type : >>> from fractions import Fraction >>> Fraction(0.25) Fraction(1, 4) The latter has a very helpful str() conversion: >>> str(Fraction(0.25)) '1/4' >>> print Fraction(0.25) 1/4 Because floating point values can be imprecise, you can end up with 'weird'

Basically Swing JComponents are able to display numbers in fractions in this form 2 2/3 . How can I paint fraction in the nicest form, for example 2⅔? . EDIT . as see I have only one way JTable inside JSpinner with one TableColumn and TableRow (that could simulated plain JtextField too), where TableRenderer could be some of JTextComponent formatted by using Html and on TableCellEdit event the TableEditor to swith to the plain JFormattedTextField , is there another way, could it be possible with plain J(Formatted)TextField too ??? trashgod On reflection, Unicode fractions among the Latin-1