Java String Split splitListToParts(final List list, final int times)

Description

Splits the List to Parts to the specified times.

License

Apache License

Parameter

Parameter	Description
T	the generic type
list	The List to Split
times	How to split.

Return

An List with the Splitted Parts

Declaration

public static <T> List<List<T>> splitListToParts(final List<T> list, final int times) 

Method Source Code

//package com.java2s;
/**/*from   w  w  w  . java  2s.  c  o m*/
 * Copyright (C) 2007 Asterios Raptis
 *
 * 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.Iterator;
import java.util.List;

public class Main {
    /**
     * Splits the List to Parts to the specified times.
     *
     * @param <T>
     *            the generic type
     * @param list
     *            The List to Split
     * @param times
     *            How to split.
     * @return An List with the Splitted Parts
     */
    public static <T> List<List<T>> splitListToParts(final List<T> list, final int times) {
        final List<List<T>> returnList = new ArrayList<>();
        List<T> tmp = new ArrayList<>();
        final Iterator<T> it = list.iterator();
        int count = 0;
        while (it.hasNext()) {
            if (count == times) {
                returnList.add(tmp);
                tmp = new ArrayList<>();
                tmp.add(it.next());
                count = 1;
            } else {
                tmp.add(it.next());
                count++;
            }
        }
        if (!tmp.isEmpty()) {
            returnList.add(tmp);
        }
        return returnList;
    }

    /**
     * Checks if a List is null or empty.
     *
     * @param <T>
     *            the generic type
     * @param list
     *            The List to check.
     * @return true if the list is null or empty otherwise false.
     */
    public static <T> boolean isEmpty(final List<T> list) {
        return list == null || list.isEmpty();
    }
}

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