Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * jcombinatorics:
 * Java Combinatorics Library
 *
 * Copyright (c) 2009 by Alistair A. Israel.
 *
 * This software is made available under the terms of the MIT License.
 * See LICENSE.txt.
 *
 * Created Aug 31, 2009
 */

import java.util.Arrays;

public class Main {
    /**
     * @param elements
     *            the elements to choose from
     * @param indices
     *            the array of indices
     * @return the mapped array
     */
    public static char[] valuesAt(final char[] elements, final int[] indices) {
        final int n = indices.length;
        final char[] result = new char[n];
        for (int i = 0; i < n; ++i) {
            result[i] = elements[indices[i]];
        }
        return result;
    }

    /**
     * @param elements
     *            the elements to choose from
     * @param indices
     *            the array of indices
     * @return the mapped array
     */
    public static int[] valuesAt(final int[] elements, final int[] indices) {
        final int n = indices.length;
        final int[] result = new int[n];
        for (int i = 0; i < n; ++i) {
            result[i] = elements[indices[i]];
        }
        return result;
    }

    /**
     * @param <T>
     *            a type
     * @param elements
     *            the elements to choose from
     * @param indices
     *            the array of indices
     * @return the mapped array
     */
    public static <T> T[] valuesAt(final T[] elements, final int[] indices) {
        final int n = indices.length;
        final T[] result = Arrays.copyOf(elements, n);
        for (int i = 0; i < n; ++i) {
            result[i] = elements[indices[i]];
        }
        return result;
    }
}