1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/composition/src-test/org/apidesign/math/test/Factorial.java	Thu Oct 30 21:30:10 2014 +0100
     1.3 @@ -0,0 +1,20 @@
     1.4 +package org.apidesign.math.test;
     1.5 +
     1.6 +import org.apidesign.math.Arithmetica;
     1.7 +
     1.8 +/** Class showing inventive, non-expected use of 
     1.9 + * Arithmetica methods to do multiplication instead of
    1.10 + * addition.
    1.11 + */
    1.12 +// BEGIN: design.composition.arith.factorial
    1.13 +public final class Factorial extends Arithmetica {
    1.14 +    public static int factorial(int n) {
    1.15 +        return new Factorial().sumRange(1, n);
    1.16 +    }
    1.17 +    @Override
    1.18 +    public int sumTwo(int one, int second) {
    1.19 +        return one * second;
    1.20 +    }
    1.21 +}
    1.22 +// END: design.composition.arith.factorial
    1.23 +