Java List Flatten flatten(List> list)

Description

flatten

License

Apache License

Declaration

public static <T> List<T> flatten(List<? extends Collection<T>> list) 

Method Source Code

//package com.java2s;
/*//from   w w w .  j av  a  2s .  com
 * (c) 2005 David B. Bracewell
 *
 * 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 <T> List<T> flatten(List<? extends Collection<T>> list) {
        List<T> flat = new ArrayList<>();
        for (Collection<T> collection : list) {
            flat.addAll(collection);
        }
        return flat;
    }
}

Related

1. flatten(List input)
2. flatten(List list, List