@@ -0,0 +1,2530 @@
+/*%0A * Zorbage: an algebraic data hierarchy for use in numeric processing.%0A *%0A * Copyright (C) 2016-2020 Barry DeZonia%0A * %0A * Redistribution and use in source and binary forms, with or without%0A * modification, are permitted provided that the following conditions are met:%0A * %0A * 1. Redistributions of source code must retain the above copyright notice,%0A *    this list of conditions and the following disclaimer.%0A * 2. Redistributions in binary form must reproduce the above copyright notice,%0A *    this list of conditions and the following disclaimer in the documentation%0A *    and/or other materials provided with the distribution.%0A * %0A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS %22AS IS%22%0A * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE%0A * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE%0A * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE%0A * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR%0A * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF%0A * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS%0A * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN%0A * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)%0A * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE%0A * POSSIBILITY OF SUCH DAMAGE.%0A */%0Apackage nom.bdezonia.zorbage.algorithm;%0A%0Aimport nom.bdezonia.zorbage.algebra.Addition;%0Aimport nom.bdezonia.zorbage.algebra.Algebra;%0Aimport nom.bdezonia.zorbage.algebra.Invertible;%0Aimport nom.bdezonia.zorbage.algebra.NaN;%0Aimport nom.bdezonia.zorbage.algebra.Unity;%0Aimport nom.bdezonia.zorbage.datasource.IndexedDataSource;%0A%0A/**%0A * %0A * @author Barry DeZonia%0A *%0A */%0Apublic class HarmonicMean %7B%0A%0A%09/**%0A%09 * %0A%09 * @param alg%0A%09 * @param list%0A%09 * @param result%0A%09 */%0A%09public static %3CT extends Algebra%3CT,U%3E & Unity%3CU%3E & Invertible%3CU%3E & Addition%3CU%3E & NaN%3CU%3E, U%3E%0A%09%09void compute(T alg, IndexedDataSource%3CU%3E list, U result)%0A%09%7B%0A%09%09long sz = list.size();%0A%09%09if (sz == 0) %7B%0A%09%09%09alg.nan().call(result);%0A%09%09%09return;%0A%09%09%7D%0A%09%09U value = alg.construct();%0A%09%09U sum = alg.construct();%0A%09%09U count = alg.construct();%0A%09%09U one = alg.construct();%0A%09%09alg.unity().call(one);%0A%09%09for (long i = 0; i %3C list.size(); i++) %7B%0A%09%09%09list.get(i, value);%0A%09%09%09alg.divide().call(one, value, value);%0A%09%09%09alg.add().call(sum, value, sum);%0A%09%09%09alg.add().call(count, one, count);%0A%09%09%7D%0A%09%09alg.divide().call(sum, count, sum);%0A%09%09alg.divide().call(one, sum, result);%0A%09%7D%0A%7D%0A

Define a harmonic mean algorithm