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docs: added header
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‎clustering/src/test/java/com/google/maps/android/clustering/algo/BenchmarkTest.kt‎

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/*
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* Copyright 2026 Google LLC
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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.maps.android.clustering.algo
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import com.google.android.gms.maps.model.LatLng

‎clustering_benchmark_dashboard.html‎

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<!DOCTYPE html>
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<!--
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Copyright 2026 Google LLC
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Clustering Benchmark Dashboard</title>
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<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
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<style>
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body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; margin: 0; padding: 20px; background-color: #f6f8fa; color: #24292f; }
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.container { max-width: 1000px; margin: 0 auto; background: white; padding: 30px; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.12); }
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h1, h2 { text-align: center; color: #0969da; }
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.charts { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; margin-top: 30px; }
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.chart-container { flex: 1 1 45%; min-width: 300px; padding: 15px; border: 1px solid #d0d7de; border-radius: 6px; }
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canvas { width: 100% !important; height: 300px !important; }
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.footer { text-align: center; margin-top: 40px; font-size: 0.9em; color: #57606a; }
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</style>
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</head>
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<body>
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<div class="container">
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<h1>Android Maps Utils Clustering Benchmarks</h1>
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<p style="text-align: center;">Performance comparison between the original Java implementation (<code>main</code>) and the Kotlin rewrite (<code>feat/rewrite-android-maps-utils</code>).</p>
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<div class="charts">
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<!-- GridBasedAlgorithm Chart -->
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<div class="chart-container">
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<h2>GridBasedAlgorithm</h2>
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<canvas id="gridChart"></canvas>
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</div>
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<!-- NonHierarchicalDistanceBasedAlgorithm Chart -->
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<div class="chart-container">
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<h2>DistanceBasedAlgorithm</h2>
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<canvas id="distanceChart"></canvas>
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</div>
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</div>
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<div class="footer">
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Note: Measurements are in milliseconds (ms). Lower is better. Tests conducted with 50,000 random items.
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</div>
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</div>
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<script>
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const chartOptions = {
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responsive: true,
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maintainAspectRatio: false,
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scales: { y: { beginAtZero: true, title: { display: true, text: 'Time (ms)' } } },
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plugins: { legend: { position: 'top' } }
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};
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const gridCtx = document.getElementById('gridChart').getContext('2d');
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new Chart(gridCtx, {
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type: 'bar',
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data: {
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labels: ['addItems', 'zoom 4.0', 'zoom 8.0', 'zoom 16.0'],
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datasets: [
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{ label: 'Java (main)', data: [8.84, 30.78, 198.23, 198.36], backgroundColor: 'rgba(255, 99, 132, 0.7)', borderColor: 'rgb(255, 99, 132)', borderWidth: 1 },
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{ label: 'Kotlin (rewrite)', data: [12.45, 31.69, 213.00, 210.77], backgroundColor: 'rgba(54, 162, 235, 0.7)', borderColor: 'rgb(54, 162, 235)', borderWidth: 1 }
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]
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},
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options: chartOptions
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});
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const distanceCtx = document.getElementById('distanceChart').getContext('2d');
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new Chart(distanceCtx, {
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type: 'bar',
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data: {
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labels: ['addItems', 'zoom 4.0', 'zoom 8.0', 'zoom 16.0'],
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datasets: [
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{ label: 'Java (main)', data: [35.88, 102.94, 73.67, 80.52], backgroundColor: 'rgba(255, 99, 132, 0.7)', borderColor: 'rgb(255, 99, 132)', borderWidth: 1 },
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{ label: 'Kotlin (rewrite)', data: [37.30, 93.58, 85.88, 64.44], backgroundColor: 'rgba(54, 162, 235, 0.7)', borderColor: 'rgb(54, 162, 235)', borderWidth: 1 }
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]
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},
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options: chartOptions
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});
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</script>
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</body>
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</html>

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