LinkedList

···
package edu.xcdq.List;

import java.util.ArrayList;
import java.util.LinkedList;

public class LinkedListDemo01 {
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;

    LinkedList 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);
    list.remove("444"); // 删除
    System.out.println(list);
    list.set(2,"55555");    // 修改
    System.out.println(list);


    // 查询
    for(String l : list){
        System.out.print(l+ "\t");
    }
    System.out.println();
    for (int i = 0; i < list.size(); i++) {
        System.out.print(list.get(i) + "\t");
    }

}

}

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