Java及MySQL常见面试题pdf

Java 实现单链表:链表中的节点。key代表节点的值，next是指向下一个节点的指针 package com.primer.structure.single_list; 02/** *单链表节点 * @author sd */ 08public class Node_Single { 09public String key;//节点的值 11public Node_Single next;//指向下一个的指针 12public Node_Single(String key){//初始化head 14this.key = key; 15this.next = null; 16} 17public Node_Single(String key,Node_Single next){ 18this.key = key; 19this.next = next; 20} 21 public String getKey() {