LinkedList
...
package edu.xcdq.list;
import java.util.ArrayList;
import java.util.LinkedList;
public class LinkedListDemo01 {
public static void main(String[] args) {
LinkedList<String> list=new LinkedList<>();//数组列表 底层是数组
list.add("111");
list.add("222");
list.add("333");
list.add("444");
list.add("555");//增加
System.out.println(list);
list.remove(1);//减少
list.remove("444");
System.out.println(list);
list.set(2,"55555");//修改
System.out.println(list);
//查询
for (String l :list){
System.out.println(l+"\t");
}
System.out.println();
for (int i = 0;i<list.size();i++){
System.out.println(list.get(i)+"\t");
}
}
}
...
ArrayList
...
package edu.xcdq.list;
import java.util.ArrayList;
public class ArrayListDemo01 {
public static void main(String[] args) {
String [] str = new String[]{"1e21","12q","aqwdfqw"};
str[0]="111";
str[1]="222";
str[2]="333";
//删除位置为1的元素
str[1]=str[2];
str[2]=null;
ArrayList<String>list=new ArrayList<>(99999999);//数组列表 底层是数组
list.add("111");
list.add("222");
list.add("333");
list.add("444");
list.add("555");//增加
System.out.println(list);
list.remove(1);//减少
list.remove("444");
System.out.println(list);
list.set(2,"55555");//修改
System.out.println(list);
//查询
for (String l :list){
System.out.println(l+"\t");
}
System.out.println();
for (int i = 0;i<list.size();i++){
System.out.println(list.get(i)+"\t");
}
}
}
...
