List去重排序

 数据格式

[

{

"id":"d3e8a9d6-e4c6-4dd8-a94f-07733d3c1b59",

"parentId":"6d460008-38f7-479d-b6d1-058ebc17dae3",

"myorder":1,

"name":"任务一"

},

{

"id":"6d460008-38f7-479d-b6d1-058ebc17dae3",

"parentId":"33978737-c722-4339-88a1-a9829dd4bca2",

"myorder":1,

"name":"项目一"

},

{

"id":"33978737-c722-4339-88a1-a9829dd4bca2",

"parentId":"5461ed61-543c-4ea1-9cb5-17b008e093a0",

"myorder":1,

"name":"课题一"

},

{

"id":"5461ed61-543c-4ea1-9cb5-17b008e093a0",

"parentId":"57e06272-eab4-4920-ae6a-25e055374851",

"myorder":1,

"name":"电子教案"

},

{

"id":"8d0723db-9087-4c83-8d0e-ab7f24ddf066",

"parentId":"6d460008-38f7-479d-b6d1-058ebc17dae3",

"name":"任务二",

"myorder":2

}

]

 

 1 //去重复的

 2 

 3 for ( int i = 0 ; i < newList.size() - 1 ; i ++ ) { 

 4 for ( int j = newList.size() - 1 ; j > i; j -- ) { 

 5 if (newList.get(j).equals(newList.get(i))) { 

 6 newList.remove(j); 

 7 } 

 8 } 

 9 }

10 

11 

12 

13 //排序

14 this.sort(newList);

15 

16 myorder为排序号

17 

18 public void sort(List<Map<String, Object>> list) {

19 Collections.sort(list, new Comparator<Map<String, Object>>(){

20 public int compare(Map<String, Object> o1, Map<String, Object> o2) {

21 return (Integer)o1.get("myorder")>(Integer)o2.get("myorder")?1:( (Integer)o1.get("myorder")==(Integer)o2.get("myorder")?0:-1);

22 } 

23 });

24 }