创建一个 LinkedHashSet 并添加元素 importjava.util.*;publicclassLinkedHashSetExample{publicstaticvoidmain(String[]args){// 创建一个 LinkedHashSetSet<String>fruits=newLinkedHashSet<>();// 添加元素fruits.add("Apple");fruits.add("Banana");fruits.add("Cherry");fruits.add("Apple");// 重复元素...
LinkedHashSet是Set集合的一个实现,具有set集合不重复的特点,同时具有可预测的迭代顺序,也就是我们插入的顺序。 并且linkedHashSet是一个非线程安全的集合。如果有多个线程同时访问当前linkedhashset集合容器,并且有一个线程对当前容器中的元素做了修改,那么必须要在外部实现同步保证数据的冥等性。 下面我们new一个新的...
TreeSet is implemented using a tree structure(red-black tree in algorithm book). The elements in a set are sorted, but the add, remove, and contains methods has time complexity of O(log (n)). It offers several methods to deal with the ordered set like first(), last(), headSet(), ...
Node<K,V>[]tab; Node<K,V>first, e; int n; K k;//先检查桶的头结点是否存在if((tab= table) !=null&& (n =tab.length) >0&& (first=tab[(n -1) &hash]) !=null) {if(first.hash==hash&&// always check first node((k =first.key) == key || (key !=null&& key.equals(k)...
importjava.util.LinkedHashSet;publicclassLinkHashSetExample {publicstaticvoidmain(String[] args) { LinkedHashSet linkedHashSet=newLinkedHashSet(); linkedHashSet.add("d"); linkedHashSet.add("a"); linkedHashSet.add("c"); linkedHashSet.add(3); ...
public class LinkedHashSetExample { public static void main(String[] args) { //Creating LinkedHashSet LinkedHashSet<String> set = new LinkedHashSet<String>(); //Adding elements to LinkedHashSet set.add("BLUE"); set.add("RED"); set.add("GREEN"); set.add("BLACK"); } } 如果你...
treeSet.remove(3); treeSet.add(5); System.out.println(treeSet); System.out.println("first()方法: " + treeSet.first()); System.out.println("last()方法: " + treeSet.last()); System.out.println("lower()方法: " + treeSet.lower(5)); ...
Example Here, we use toArray() method to find the first element from LinkedhashSet. Open Compiler import java.util.LinkedHashSet; public class Main { public static void main(String[] args) { LinkedHashSet<String> hm = new LinkedHashSet<>(); hm.add("apple"); hm.add("banana"); hm...
Passes each element of the container to the given function and returns the first (index,value) for which the function is true or -1,nil otherwise if no element matches the criteria. Find(func(index int, value interface{}) bool) (int, interface{})} Example: package main import ( "fmt"...
Passes each element of the container to the given function and returns the first (index,value) for which the function is true or -1,nil otherwise if no element matches the criteria. Find(func(index int, value interface{}) bool) (int, interface{})} Example: package main import ( "fmt"...