samples/composition/src-test/org/apidesign/math/test/Factorial.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Thu, 30 Oct 2014 21:30:10 +0100
changeset 409 40cabcdcd2be
permissions -rw-r--r--
Updating to NBMs from NetBeans 8.0.1 as some of them are required to run on JDK8
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package org.apidesign.math.test;
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import org.apidesign.math.Arithmetica;
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/** Class showing inventive, non-expected use of 
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 * Arithmetica methods to do multiplication instead of
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 * addition.
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 */
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// BEGIN: design.composition.arith.factorial
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public final class Factorial extends Arithmetica {
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    public static int factorial(int n) {
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        return new Factorial().sumRange(1, n);
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    }
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    @Override
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    public int sumTwo(int one, int second) {
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        return one * second;
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    }
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}
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// END: design.composition.arith.factorial
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