Java List First Item getFirstDuplicateValue(List values)

Description

get First Duplicate Value

License

Apache License

Declaration

public static String getFirstDuplicateValue(List<String> values) 

Method Source Code

//package com.java2s;
/*//  w w 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.List;

public class Main {
    public static String getFirstDuplicateValue(List<String> values) {
        String message = null;
        int size = values.size();
        for (int i = 0; i < size; i++) {
            String col1 = values.get(i);
            for (int j = i + 1; j < size; j++) {
                String col2 = values.get(j);
                if (col1.equals(col2)) {
                    message = col1;
                    return message;
                }
            }
        }
        return message;
    }
}

Related

1. getFirst(List list)
2. getFirst(List list)
3. getFirst(List source)
4. getFirstAsString(Map> multiValueMap, String key)
5. getFirstColumn(List> llo, String reason)
6. getFirstElement(List list)
7. getFirstElement(List collection)
8. getFirstElement(List list)
9. getFirstElement(List list)