Java Array Unique getUniqueWords(String[] input)

Description

Find all unique words in an array of words

License

Apache License

Parameter

Parameter	Description
input	an array of Strings

Return

an array of all unique strings. Order is not guarenteed

Declaration

public static String[] getUniqueWords(String[] input) 

Method Source Code

//package com.java2s;
/*//from   w ww . j  a  v a2 s  .  c  om
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 Nick Lothian. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        developers of Classifier4J (http://classifier4j.sf.net/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The name "Classifier4J" must not be used to endorse or promote
 *    products derived from this software without prior written
 *    permission. For written permission, please contact
 *    http://sourceforge.net/users/nicklothian/.
 *
 * 5. Products derived from this software may not be called
 *    "Classifier4J", nor may "Classifier4J" appear in their names
 *    without prior written permission. For written permission, please
 *    contact http://sourceforge.net/users/nicklothian/.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * ====================================================================
 */

import java.util.*;

public class Main {
    /**
     * Find all unique words in an array of words
     *
     * @param input an array of Strings
     * @return an array of all unique strings. Order is not guarenteed
     */
    public static String[] getUniqueWords(String[] input) {
        if (input == null) {
            return new String[0];
        } else {
            Set result = new TreeSet();
            for (int i = 0; i < input.length; i++) {
                result.add(input[i]);
            }
            return (String[]) result.toArray(new String[result.size()]);
        }
    }
}

Related

1. countUnique(int[][] array)
2. getUniqueIDsArray(int[] idArray, String ids, String seperator)
3. getUniqueItems(final String[] allItems, final String newItem, final int maxItems)
4. invertRelabeling(int[] relabeling, int[] uniqueVars, int maxVarNum)
5. unique(double[] in)
6. unique(int[] a, int aLen, int[] b, int bLen)
7. unique(int[] array)