Java Array Duplicate removeDuplicateStrings(String[] array)

Description

remove Duplicate Strings

License

Apache License

Declaration

public static String[] removeDuplicateStrings(String[] array) 

Method Source Code

//package com.java2s;
/*//ww  w . j  a va  2 s.c  o m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.*;

public class Main {

    public static String[] removeDuplicateStrings(String[] array) {
        if (isEmpty(array)) {
            return array;
        }
        Set<String> set = new TreeSet<String>();
        for (String element : array) {
            set.add(element);
        }
        return toStringArray(set);
    }

    public static boolean isEmpty(Object[] array) {
        return (array == null || array.length == 0);
    }

    public static String[] toStringArray(Collection<String> collection) {
        if (collection == null) {
            return null;
        }
        return collection.toArray(new String[collection.size()]);
    }

    public static String[] toStringArray(Enumeration<String> enumeration) {
        if (enumeration == null) {
            return null;
        }
        List<String> list = Collections.list(enumeration);
        return list.toArray(new String[list.size()]);
    }
}

Related

1. removeDuplicates(double[] array)
2. removeDuplicates(final Object[] array)
3. removeDuplicates(int[] input)
4. removeDuplicates(T[] elements)
5. removeDuplicatesInPath(int[][] path)
6. removeDuplicateValues(double[] values)