参考：

java linkedlist 查找_用LinkedList如何实现搜索指定对象的元素
https://blog.csdn.net/weixin_29793473/article/details/114201063

java linkedlist 查找_Java LinkedList.get() 获取元素
https://blog.csdn.net/weixin_34418334/article/details/114537443

java list 查找元素_java中如何在LinkedList查找元素
https://blog.csdn.net/weixin_39878716/article/details/114180132

java linkedlist 查找_用LinkedList如何实现搜索指定对象的元素
https://blog.csdn.net/weixin_29793473/article/details/114201063

Java LinkedList
https://www.runoob.com/java/java-linkedlist.html