Uncommons Maths is a java library with nice math utilities and random number generators. This requires the library uncommons-maths-1.2.2.jar to be in classpath. The following example shows using Rational class.
package com.bethecoder.tutorials.uncommons; import org.uncommons.maths.number.Rational; public class RationalNumberTest { /** * @param args */ public static void main(String[] args) { Rational a = Rational.QUARTER; Rational b = Rational.HALF; Rational c = a.add(b); System.out.println(a + "+" + b + " = " + c); a = new Rational(1, 8); b = new Rational(3, 8); c = a.add(b); System.out.println(a + "+" + b + " = " + c); a = new Rational(4, 17); b = new Rational(8, 13); c = a.add(b); System.out.println(a + "+" + b + " = " + c); } }
1/4+1/2 = 3/4 1/8+3/8 = 1/2 4/17+8/13 = 188/221
