Java Collection Flatten flatten(Collection> collections)

Description

flatten

License

Apache License

Declaration

public static <E> List<E> flatten(Collection<? extends Collection<E>> collections) 

Method Source Code

//package com.java2s;
/*/*  w  w w .ja v  a2 s . c  o  m*/
 * Copyright 2000-2013 JetBrains s.r.o.
 *
 * Licensed 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.ArrayList;
import java.util.Collection;
import java.util.List;

public class Main {
    public static <E> List<E> flatten(Collection<? extends Collection<E>> collections) {
        List<E> result = new ArrayList<E>();
        for (Collection<E> list : collections) {
            result.addAll(list);
        }

        return result;
    }
}

Related

1. flatten( Collection colOfCols)
2. flatten(Class cls, Collection> collections)
3. flatten(Collection> cols)
4. flatten(Collection l)
5. flatten(Collection list, Class type)
6. flatten(Collection> nestedList)