java工具类-列表分段处理

　　　　 List intList = Lists.newArrayList(1, 2, 3, 4, 5, 6, 7, 8);
        List> subSets = Lists.partition(intList, 3);
        List last = subSets.get(2);

        Collection intCollection = Lists.newArrayList(1, 2, 3, 4, 5, 6, 7, 8);
        Iterable> subSets = Iterables.partition(intCollection, 3);
        List firstPartition = subSets.iterator().next();

        ArrayList intList = Lists.newArrayList(1, 2, 3, 4, 5, 6, 7, 8);
        List> subSets2 = ListUtils.partition(intList, 3);

    /**
     * 列表数据分组
     * @param source 源数据
     * @param size 根据大小分组
     * @param  泛型
     * @return
     */
    public static  List>  averageAssign(List source, int size){
        List> result = new ArrayList();
        int offset=0;
        boolean isZero = source.size()%size==0;
        int totalPage = source.size()/size + 1;
        int totalSize = source.size();
        while(totalPage-1>=offset){
            List subList = null;
            if(offset == totalPage-1){
                if(isZero){
                    break;
                }
                //最后一段的处理
                subList = source.subList(size * offset, totalSize);
            }else{
                subList = source.subList(size * offset, size * (offset + 1));
            }
            offset++;
            result.add(subList);
        }
        return result;
    }