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Java example source code file (UnivariateStatistic.java)

This example Java source code file (UnivariateStatistic.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

mathillegalargumentexception, univariatestatistic

The UnivariateStatistic.java Java example source code

/*
 * 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.math3.stat.descriptive;

import org.apache.commons.math3.exception.MathIllegalArgumentException;
import org.apache.commons.math3.util.MathArrays;


/**
 * Base interface implemented by all statistics.
 *
 */
public interface UnivariateStatistic extends MathArrays.Function {
    /**
     * Returns the result of evaluating the statistic over the input array.
     *
     * @param values input array
     * @return the value of the statistic applied to the input array
     * @throws MathIllegalArgumentException  if values is null
     */
    double evaluate(double[] values) throws MathIllegalArgumentException;

    /**
     * Returns the result of evaluating the statistic over the specified entries
     * in the input array.
     *
     * @param values the input array
     * @param begin the index of the first element to include
     * @param length the number of elements to include
     * @return the value of the statistic applied to the included array entries
     * @throws MathIllegalArgumentException if values is null or the indices are invalid
     */
    double evaluate(double[] values, int begin, int length) throws MathIllegalArgumentException;

    /**
     * Returns a copy of the statistic with the same internal state.
     *
     * @return a copy of the statistic
     */
    UnivariateStatistic copy();
}

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