diff options
Diffstat (limited to 'src/main/java/org/apache/commons/math/stat/descriptive/rank/Median.java')
-rw-r--r-- | src/main/java/org/apache/commons/math/stat/descriptive/rank/Median.java | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/main/java/org/apache/commons/math/stat/descriptive/rank/Median.java b/src/main/java/org/apache/commons/math/stat/descriptive/rank/Median.java new file mode 100644 index 0000000..6e13b13 --- /dev/null +++ b/src/main/java/org/apache/commons/math/stat/descriptive/rank/Median.java @@ -0,0 +1,55 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.commons.math.stat.descriptive.rank; + +import java.io.Serializable; + + +/** + * Returns the median of the available values. This is the same as the 50th percentile. + * See {@link Percentile} for a description of the algorithm used. + * <p> + * <strong>Note that this implementation is not synchronized.</strong> If + * multiple threads access an instance of this class concurrently, and at least + * one of the threads invokes the <code>increment()</code> or + * <code>clear()</code> method, it must be synchronized externally.</p> + * + * @version $Revision: 811685 $ $Date: 2009-09-05 19:36:48 +0200 (sam. 05 sept. 2009) $ + */ +public class Median extends Percentile implements Serializable { + + /** Serializable version identifier */ + private static final long serialVersionUID = -3961477041290915687L; + + /** + * Default constructor. + */ + public Median() { + super(50.0); + } + + /** + * Copy constructor, creates a new {@code Median} identical + * to the {@code original} + * + * @param original the {@code Median} instance to copy + */ + public Median(Median original) { + super(original); + } + +} |