拆分字符，组成菜单 求个算法

假使有字符串 ：
aa/bb/cc
aa/bb/ff
aa/bb/ee

根据字符的规律，拆分成如下形式的菜单，有没有什么解决方案捏？

aa （一级）
|- bb （二级）
|-cc 。。。。
|-ff
|-ee

考虑字符会很多，具体的结构也不固定，可能会无限N层， 递归 做 ？ 存与取是个问题, 求贴码.....

public class Test
{

public void parseString()
{
    NodTree nodeTree = new NodTree();
    nodeTree.setNodeValue("root");
    String str = "aa/bb/cc/dd";
    String str1 = "aa/bb/cc/ee";
    String str2 = "aa/bb/cc/ff";
    String str3 = "bb/cc/ff";

    addNode(nodeTree,str.split("/"));
    addNode(nodeTree,str1.split("/"));
    addNode(nodeTree,str2.split("/"));
    addNode(nodeTree,str3.split("/"));

    print(nodeTree,0);
    System.out.println("1111111");

}
public void print(NodTree nodeTree,int w)
{
    for(int i=0;i<w;i++)
    {
        System.out.print(" ");
    }
    System.out.println("|-"+nodeTree.nodeValue);
    for(NodTree tree:nodeTree.getNodeList())
    {
        print(tree,w+1);
    }
}
public void addNode(NodTree nodeTree, String[] strArr)
{
    NodTree creatNodeTree = null;
    NodTree queryNode = null;
    NodTree parentNode = nodeTree;
    for(String str:strArr)
    {
        queryNode = parentNode.hasSubNode(str);
        if(null == queryNode)
        {
            creatNodeTree = new NodTree();
            creatNodeTree.setNodeValue(str);
            parentNode.addSunNode(creatNodeTree);

            parentNode =creatNodeTree;
        }
        else
        {
            parentNode = queryNode;
        }
    }
}


public static void main(String[] args)
{
    Test t = new Test();
    t.parseString();
}

class NodTree 
{
    String          nodeValue   = null;
    List<NodTree>   nodeList    = new ArrayList<Test.NodTree>();


    public String getNodeValue()
    {
        return nodeValue;
    }

    public void setNodeValue(String nodeValue)
    {
        this.nodeValue = nodeValue;
    }

    public List<NodTree> getNodeList()
    {
        return nodeList;
    }

    public void setNodeList(List<NodTree> nodeList)
    {
        this.nodeList = nodeList;
    }
    public void addSunNode(NodTree nodeTree)
    {
        nodeList.add(nodeTree);
    }

    public NodTree hasSubNode(String str)
    {
        if(null !=nodeList && !nodeList.isEmpty() )
        {
            for(NodTree nodeTree:nodeList)
            {
                if(nodeTree.nodeValue.equals(str))
                {
                    return nodeTree;
                }
            }
        }
        return null;
    }


}

}

万一有aa/bb/cc
cc/dd的情况呢？
cc在那一层？

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