56 lines
1.4 KiB
Java
56 lines
1.4 KiB
Java
/*
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* Copyright (C) 2010 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.collect;
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import static com.google.common.collect.DiscreteDomain.integers;
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import com.google.caliper.BeforeExperiment;
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import com.google.caliper.Benchmark;
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import com.google.caliper.Param;
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import java.util.Set;
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/**
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* Very simple powerSet iteration benchmark.
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*
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* @author Kevin Bourrillion
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*/
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public class PowerSetBenchmark {
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@Param({"2", "4", "8", "16"})
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int elements;
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Set<Set<Integer>> powerSet;
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@BeforeExperiment
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void setUp() {
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Set<Integer> set = ContiguousSet.create(Range.closed(1, elements), integers());
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powerSet = Sets.powerSet(set);
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}
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@Benchmark
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int iteration(int reps) {
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int sum = 0;
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for (int i = 0; i < reps; i++) {
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for (Set<Integer> subset : powerSet) {
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for (Integer value : subset) {
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sum += value;
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}
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}
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}
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return sum;
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}
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}
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