com.github.tell.mathematics.combinatorics.CombinationTest.java Source code

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Here is the source code for com.github.tell.mathematics.combinatorics.CombinationTest.java

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/**
 * @author Tadanori TERUYA <tadanori.teruya@gmail.com> (2012)
 * @license: The MIT license <http://opensource.org/licenses/MIT>
 */
/*
 * Copyright (c) 2012 Tadanori TERUYA (tell) <tadanori.teruya@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * @license: The MIT license <http://opensource.org/licenses/MIT>
 */
package com.github.tell.mathematics.combinatorics;

import org.apache.commons.lang3.ArrayUtils;
import org.apache.log4j.PropertyConfigurator;
import org.junit.Test;

import java.util.Arrays;

/**
 * @author Tadanori TERUYA &lt;tadanori.teruya@gmail.com&gt; (2012)
 */
public class CombinationTest {

    static {
        PropertyConfigurator.configure("log4j.properties");
    }

    @Test
    public void toyExample() throws Exception {
        final Integer[] a = new Integer[] { 0, 1, 2, 3, 4 };
        final Integer[] b = ArrayUtils.subarray(a, 2, 4);
        System.out.printf("b = %s%n", Arrays.deepToString(b));
        final Integer[] c = ArrayUtils.add(b, 5);
        System.out.printf("c = %s%n", Arrays.deepToString(c));
        final Integer[] d = ArrayUtils.addAll(c, new Integer[] { 6, 7 });
        System.out.printf("d = %s%n", Arrays.deepToString(d));

        for (int i = 0; i <= d.length; i++) {
            final Combination<Integer> comb = new Combination<Integer>(d, i);
            final Integer[][] e = comb.makeCombination();
            System.out.printf("e = %s%n", Arrays.deepToString(e));
        }
    }

    @Test
    public void toyIteratorExample() throws Exception {
        final Integer[] a = new Integer[] { 0, 1, 2, 3, 4 };
        final Integer[] b = ArrayUtils.subarray(a, 2, 4);
        System.out.printf("b = %s%n", Arrays.deepToString(b));
        final Integer[] c = ArrayUtils.add(b, 5);
        System.out.printf("c = %s%n", Arrays.deepToString(c));
        final Integer[] d = ArrayUtils.addAll(c, new Integer[] { 6, 7 });
        System.out.printf("d = %s%n", Arrays.deepToString(d));

        for (int i = 0; i <= d.length; i++) {
            final Combination<Integer> comb = new Combination<Integer>(d, i);
            for (final Integer[] e : comb) {
                System.out.printf("e = %s%n", Arrays.deepToString(e));
            }
        }
    }
}