请问swift 怎样把json数据转换为树形结构？

Question

服务器返回一个json数据，内容格式大概如下：对应关系就是父的id和子的pId相等，我已转成模型

{
    "name":"1111",
    "canselect":true,
    "pId":"0",
    "id":"001"
},
{
    "name":"222",
    "canselect":true,
    "pId":"001",
    "id":"002"
},
{
    "name":"333",
    "canselect":true,
    "pId":"001",
    "id":"027"
},
{
    "name":"4444",
    "canselect":true,
    "pId":"001",
    "id":"036"
},
{
    "name":"555",
    "canselect":true,
    "pId":"001",
    "id":"046"
},

我之前找过只有js实现方法，无奈不懂JS只好过来求助了，谢谢大神回答！