/*license*\ XBN-Java: Copyright (C) 2014, Jeff Epstein (aliteralmind __DASH__ github __AT__ yahoo __DOT__ com) This software is dual-licensed under the: - Lesser General Public License (LGPL) version 3.0 or, at your option, any later version; - Apache Software License (ASL) version 2.0. Either license may be applied at your discretion. More information may be found at - http://en.wikipedia.org/wiki/Multi-licensing. The text of both licenses is available in the root directory of this project, under the names "LICENSE_lgpl-3.0.txt" and "LICENSE_asl-2.0.txt". The latest copies may be downloaded at: - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt \*license*/ package com.github.xbn.examples.util.non_xbn; /** <p>Elegant and short solution to finding the number of occurances of each number in an int-array.</p> <p>{@code java com.github.xbn.examples.util.non_xbn.IntOccurancesInArrayElegant}</p> * @see IntOccurancesInArray * @since 0.1.0 * @author Copyright (C) 2014, Jeff Epstein ({@code aliteralmind __DASH__ github __AT__ yahoo __DOT__ com}), dual-licensed under the LGPL (version 3.0 or later) or the ASL (version 2.0). See source code for details. <a href="http://xbnjava.aliteralmind.com">{@code http://xbnjava.aliteralmind.com}</a>, <a href="https://github.com/aliteralmind/xbnjava">{@code https://github.com/aliteralmind/xbnjava}</a> **/ public class IntOccurancesInArrayElegant { public static final void main(String[] ignored) { int[] ai = new int[]{52, 67, 32, 43, 32, 21, 12, 5, 0, 3, 2, 0, 0}; int[] aiHits1to100 = new int[101]; for(int i : ai) { if(i >= 0 && i <= 100) { aiHits1to100[i]++; } } for(int i = 0; i < aiHits1to100.length; i++) { int iOccurances = aiHits1to100[i]; if(iOccurances > 0) { System.out.println("number=" + i + ", occurances=" + iOccurances); } } } }