diff options
| author | Gunnar Morling <gunnar.morling@googlemail.com> | 2024-01-02 20:30:41 +0100 |
|---|---|---|
| committer | Gunnar Morling <gunnar.morling@googlemail.com> | 2024-01-02 20:30:41 +0100 |
| commit | 5e80d8a7b04bbbb1558fe3d1db7ef2bdd3019545 (patch) | |
| tree | 7e69d5666a3e640358b993025596081615718316 /src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa.java | |
| parent | bea9cfdbd1deb1419f57fae4d601ccb7b825b25e (diff) | |
Evaluating Kuduwa Keshavram's submission
Diffstat (limited to 'src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa.java')
| -rw-r--r-- | src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa.java | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa.java b/src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa.java deleted file mode 100644 index 98a3ada..0000000 --- a/src/main/java/dev/morling/onebrc/CalculateAverage_kuduwa.java +++ /dev/null @@ -1,79 +0,0 @@ -/* - * Copyright 2023 The original authors - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -package dev.morling.onebrc; - -import java.io.IOException; -import java.nio.file.Files; -import java.nio.file.Path; -import java.util.Map; -import java.util.concurrent.ConcurrentHashMap; -import java.util.stream.Collectors; - -public class CalculateAverage_kuduwa { - - private static final String FILE = "./measurements.txt"; - - private record Measurement(double min, double max, double sum, long count) { - - Measurement(double initialMeasurement) { - this(initialMeasurement, initialMeasurement, initialMeasurement, 1); - } - - public static Measurement combineWith(Measurement m1, Measurement m2) { - return new Measurement( - m1.min < m2.min ? m1.min : m2.min, - m1.max > m2.max ? m1.max : m2.max, - m1.sum + m2.sum, - m1.count + m2.count); - } - - public String toString() { - return round(min) + "/" + round(sum / count) + "/" + round(max); - } - - private double round(double value) { - return Math.round(value * 10.0) / 10.0; - } - } - - public static void main(String[] args) throws IOException { - // long before = System.currentTimeMillis(); - Map<String, Measurement> resultMap = new ConcurrentHashMap<>(); - Files.lines(Path.of(FILE)) - .parallel() - .forEach( - line -> { - int pivot = line.indexOf(";"); - String key = line.substring(0, pivot); - Measurement measured = new Measurement(Double.parseDouble(line.substring(pivot + 1))); - Measurement existingMeasurement = resultMap.get(key); - if (existingMeasurement != null) { - resultMap.put(key, Measurement.combineWith(existingMeasurement, measured)); - } - else { - resultMap.put(key, measured); - } - }); - System.out.print("{"); - System.out.print( - resultMap.entrySet().stream() - .map(Object::toString) - .sorted() - .collect(Collectors.joining(", "))); - System.out.println("}"); - // System.out.println("Took: " + (System.currentTimeMillis() - before)); - } -} |
