mirror of https://github.com/jlizier/jidt
54 lines
1.7 KiB
Java
Executable File
54 lines
1.7 KiB
Java
Executable File
/*
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* Java Information Dynamics Toolkit (JIDT)
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* Copyright (C) 2012, Joseph T. Lizier
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package infodynamics.utils;
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/**
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* <p>Class used to sort an array of array of doubles based on the first element in each array.
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* </p>
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*
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* <p>Usage: <code>java.util.Arrays.sort(double[][], FirstIndexComparatorDouble.getInstance())</code>;
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* </p>
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*
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* @author Joseph Lizier (<a href="joseph.lizier at gmail.com">email</a>,
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* <a href="http://lizier.me/joseph/">www</a>)
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*/
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public class FirstIndexComparatorDouble implements java.util.Comparator<double[]> {
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private static FirstIndexComparatorDouble instance = null;
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private FirstIndexComparatorDouble() {
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}
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public static FirstIndexComparatorDouble getInstance() {
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if (instance == null) {
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instance = new FirstIndexComparatorDouble();
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}
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return instance;
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}
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public int compare(double[] a1, double[] a2) {
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if (a1[0] < a2[0]) {
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return -1;
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} else if (a1[0] == a2[0]) {
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return 0;
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} else {
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return 1;
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}
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}
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} |