建树算法问题
抛个问题，感兴趣的可以玩玩。

List tree=new ArrayList{"zk0101","zk0201","zk0","zk010101","zk02","zk0201","zk01"}
根据上面的list生成树
zk0
zk01
zk0101
zk010101
zk02
zk0201

[解决办法]
狂接~~~~~~~~~~~~~~~~~~~~~~~~~~~~~