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Java example source code file (RankingAlgorithm.java)

This example Java source code file (RankingAlgorithm.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.

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The RankingAlgorithm.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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.commons.math3.stat.ranking;

 * Interface representing a rank transformation.
 * @since 2.0
public interface RankingAlgorithm {
     * <p>Performs a rank transformation on the input data, returning an array
     * of ranks.</p>
     * <p>Ranks should be 1-based - that is, the smallest value
     * returned in an array of ranks should be greater than or equal to one,
     * rather than 0. Ranks should in general take integer values, though
     * implementations may return averages or other floating point values
     * to resolve ties in the input data.</p>
     * @param data array of data to be ranked
     * @return an array of ranks corresponding to the elements of the input array
    double[] rank (double[] data);

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