手写双链表,哈希表加双链表实现LRU package TEST; import java.util.*; public class Solu { //手写双向链表节点 class DlinkNode { int key; int val; DlinkNode pre;//声明不用初始化 DlinkNode next; public DlinkNode(int key, int val) { this.key = key; this.val = val; } public...