Here you can find the source of zeroThrough(int max)
public static int[] zeroThrough(int max)
//package com.java2s; /*/*w ww. j a va 2 s. c o m*/ * * Managed Data Structures * Copyright ? 2016 Hewlett Packard Enterprise Development Company LP. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * As an exception, the copyright holders of this Library grant you permission * to (i) compile an Application with the Library, and (ii) distribute the * Application containing code generated by the Library and added to the * Application during this compilation process under terms of your choice, * provided you also meet the terms and conditions of the Application license. * */ public class Main { public static int[] zeroThrough(int max) { return ints(0, max, 1); } public static int[] ints(final int min, final int max, final int step) { int n = (max - min) / step + 1; if (n < 0) { return new int[0]; } int[] array = new int[n]; int next = min; for (int i = 0; i < n; i++) { array[i] = next; next += step; } return array; } public static int[] ints(int min, int max) { return ints(min, max, min > max ? -1 : 1); } }