fractions

In Python, when you have an object you can convert it to an integer using the int function. For example int(1.3) will return 1 . This works internally by using the __int__ magic method of the object, in this particular case float.__int__ . In Python Fraction objects can be used to construct exact fractions. from fractions import Fraction x = Fraction(4, 3) Fraction objects lack an __int__ method, but you can still call int() on them and get a sensible integer back. I was wondering how this was possible with no __int__ method being defined. In [38]: x = Fraction(4, 3) In [39]: int(x) Out[39]: 1

In Java, I am trying to find a way to convert a float number into a fraction string. For example: float num = 1.33333; String numStr = Convert(num); // Should return "1 1/3" float num2 = 1.333; String numStr2 = Convert(num2); // Should also return "1 1/3" float num3 = 0.5; String numStr3 = Convert(num3); // Should return "1/2" float num4 = 2.25; String numStr4 = Convert(num4); // Should return "2 1/4" Any ideas how to do this in Java? The simplest approach might be to use trial and error. public static String toFraction(double d, int factor) { StringBuilder sb = new StringBuilder(); if (d < 0)

How do I read a fraction into C to do math with it? (The fraction will contain the slash symbol) For example, A user will input 3/12. (a string) The program will find the gcd, calculate the reduced fraction and come up with 1/4. My original plan was to use strtok() function to get the numerator and denominator by itself but I ran into a problem of storing the numerator and denominator into separate variables. Is this a valid method? If so how does one store the numerator and denominator into 2 separate variables after tokenizing the string? void blah(void) { char str[30]; scanf("%s",&str);

How to simplify a fraction in C#? For example, given 1 11/6 , I need it simplified to 2 5/6 . If all you want is to turn your fraction into a mixed number whose fractional part is a proper fraction like the previous answers assumed, you only need to add numerator / denominator to the whole part of the number and set the numerator to numerator % denominator . Using loops for this is completely unnecessary. However the term "simplify" usually refers to reducing a fraction to its lowest terms. Your example does not make clear whether you want that as well, as the example is in its lowest terms

We've got some fraction information stored in the database, e.g. ¾ ½ Short of doing a search and replace, are there any inbuilt PHP functions that will automatically convert these to proper html entities? You can use the htmlentities() function . This will replace all special characters with their HTML equivalent. It should do the job your require. Good question btw, +1. htmlentities . But you probably don't need to. Serve your page in an encoding that includes them (UTF-8, ISO-8859-1) and you can include those as literal, unescaped characters. The answer is already given: use htmlentities() .

I'm trying to implement the simplex method in Python so I need to use the Gaussian elimination on arrays. Very often fractions come up and for more clarity and precision I would like to keep the fractional form instead of using floats. I know the 'fractions' module but I'm struggling to use it. I wrote my code using this module but the arrays are always returned with floats. Isn't it possible to print an array with fractions inside ? On this basic example : >>> A array([[-1., 1.], [-2., -1.]]) >>> A[0][0]=Fraction(2,3) >>> A array([[ 0.66666667, 1. ], [-2. , -1. ]]) I would like to have array(