86 lines
No EOL
2.6 KiB
Java
Executable file
86 lines
No EOL
2.6 KiB
Java
Executable file
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020 Ziver Koc
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package zutil.benchmark;
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import com.carrotsearch.junitbenchmarks.BenchmarkRule;
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import org.junit.Rule;
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import org.junit.Test;
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public class LoopBenchmark {
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public static final int TEST_EXECUTIONS = 500;
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@Rule
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public BenchmarkRule benchmarkRun = new BenchmarkRule();
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private int[] array1 = new int[100_000];
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private int[] array2 = new int[50_000];
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@Test
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public void writeArrayOneLoop() {
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for (int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < Math.max(array1.length, array1.length); i++) {
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if (i < array1.length)
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array1[i] = i;
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if (i < array2.length)
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array2[i] = i;
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}
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}
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}
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@Test
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public void writeArraySeparateLoops(){
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for (int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < array1.length; i++) {
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array1[i] = i;
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}
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for (int j = 0; j < array2.length; j++) {
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array2[j] = j;
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}
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}
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}
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@Test
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public void readArrayLoop() {
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int sum = 0;
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for (int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < array1.length; i++) {
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sum += array1[i];
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}
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}
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}
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@Test
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public void readArrayForeach() {
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int sum = 0;
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for (int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i : array1) {
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sum += array1[i];
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}
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}
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}
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} |