java將list分為指定大小的新集合

上代碼:

　　

import java.util.ArrayList;
import java.util.List;

public class JayCommonUtil {

    /**
     * 按指定大小，分隔集合，將集合按規定個數分為n個部分
     * 
     * @param list
     * @param len
     * @return
     */
    public static List<List<String>> splitList(List<String> list, int len) {
        if (list == null || list.size() == 0 || len < 1) {
            return null;
        }

        List<List<String>> result = new ArrayList<List<String>>();

        int size = list.size();
        int count = (size + len - 1) / len;

        for (int i = 0; i < count; i++) {
            List<String> subList = list.subList(i * len, ((i + 1) * len > size ? size : len * (i + 1)));
            result.add(subList);
        }
        return result;
    }

}