yeluolanyan · August 6, 2014 08:47
diff --git a/计算两个集合的差集 b/计算两个集合的差集
 //计算两个集合的差集
 		public static List diff(List ls, List ls2) {   
 	        List list = new ArrayList(Arrays.asList(new Object[ls.size()]));   
 	        Collections.copy(list, ls);   
 	        list.removeAll(ls2);   
 	        return list;   
 	    }
	//计算两个集合的差集
	public static List diff(List ls, List ls2) {
	List list = new ArrayList(Arrays.asList(new Object[ls.size()]));
	Collections.copy(list, ls);
	list.removeAll(ls2);
	return list;
	}