java基础---19---List\ArrayList\LinkedList、Set\HashSet\LinkedHashSet List:有序、索引、可以重复 List的特有方法:与索引相关的add\set\remove 迭代器的并发修改异常:在取元素的同时,继续往里面添加元素(下面包异常) 数组查询快,增删慢;链表查询慢,增删快 ArrayList:增删慢,查询快 LinkedList:增删快,查询慢 Lin...
importjava.util.LinkedHashSet;//导入方法依赖的package包/类publicstaticvoidmain(String[] args){//create object of LinkedHashSetLinkedHashSet lhashSet =newLinkedHashSet();//add elements to LinkedHashSet objectlhashSet.add(newInteger("1")); lhashSet.add(newInteger("2")); lhashSet.add(new...
LinkedHashSet implements Set interface and extends HashSet class. LinkedHashSet maintains insertion order, so when you will be able to access elements in the order they were inserted like ArrayList. Example: LinkedHashSetMain.java 1 2 3
Marshal(m) // Same as "m.ToJSON(m)" if err != nil { fmt.Println(err) } fmt.Println(string(bytes)) // {"a":"1","b":"2","c":"3"} } Typical usage for value-only structures: package main import ( "encoding/json" "fmt" "github.com/emirpasic/gods/lists/arraylist" ) ...
package main import ( "encoding/json" "fmt" "github.com/emirpasic/gods/lists/arraylist" ) func main() { list := arraylist.New() list.Add("a", "b", "c") bytes, err := json.Marshal(list) // Same as "list.ToJSON(list)" if err != nil { fmt.Println(err) } fmt.Println(str...
ArrayList: [2, 4] LinkedHashSet: [2, 4] Methods of LinkedHashSet The LinkedHashSet class provides methods that allow us to perform various operations on the linked hash set. Insert Elements to LinkedHashSet add() - inserts the specified element to the linked hash set addAll() - insert...
package main import ( "encoding/json" "fmt" "github.com/emirpasic/gods/lists/arraylist" ) func main() { list := arraylist.New() list.Add("a", "b", "c") bytes, err := json.Marshal(list) // Same as "list.ToJSON(list)" if err != nil { fmt.Println(err) } fmt.Println(str...
Marshal(m) // Same as "m.ToJSON(m)" if err != nil { fmt.Println(err) } fmt.Println(string(bytes)) // {"a":"1","b":"2","c":"3"} } Typical usage for value-only structures: package main import ( "encoding/json" "fmt" "github.com/emirpasic/gods/lists/arraylist" ) ...
package main import ( "encoding/json" "fmt" "github.com/emirpasic/gods/lists/arraylist" ) func main() { list := arraylist.New() list.Add("a", "b", "c") bytes, err := json.Marshal(list) // Same as "list.ToJSON(list)" if err != nil { fmt.Println(err) } fmt.Println(str...
package main import ( "encoding/json" "fmt" "github.com/emirpasic/gods/lists/arraylist" ) func main() { list := arraylist.New() list.Add("a", "b", "c") bytes, err := json.Marshal(list) // Same as "list.ToJSON(list)" if err != nil { fmt.Println(err) } fmt.Println(str...