class LRUCache { public: LRUCache(int capacity) {_capacity=capacity;} //返回key对应的value int get(int key){ auto it=cache.find(key); ; update(it);//更改为最近访问 return it->second.first;//返回key值对应的value } void put(int key,int value){ auto it=cache.find(key); i…

题目来源: https://leetcode.com/problems/lru-cache/ 实现一个LRU缓存.直接上代码. 代码(python): class LRUCache(object): def __init__(self, capacity): """ :type capacity: int """ LRUCache.capacity = capacity LRUCache.length = 0 LRUCache.dict = co…

Design and implement a data structure for Least Frequently Used (LFU) cache. It should support the following operations: get and put. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.pu…

Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1. set…

Design and implement a data structure for Least Frequently Used (LFU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1. s…

题目: Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.…

原题链接在这里:https://leetcode.com/problems/lfu-cache/?tab=Description 题目: Design and implement a data structure for Least Frequently Used (LFU) cache. It should support the following operations: getand put. get(key) - Get the value (will always be positiv…

https://oj.leetcode.com/problems/lru-cache/ 涨姿势的一道题,相当于实现一种数据结构,实现最近最少使用数据结构. // 用来记录 前后节点都是什么 类似链表上的节点 struct DataNode{ int key, value; DataNode *prev, *next; DataNode(int _key, int _value){ key = _key; value = _value; prev = NULL; next = NULL; } };…

题目大意:设计一个用于LRU cache算法的数据结构. 题目链接.关于LRU的基本知识可参考here 分析:为了保持cache的性能,使查找,插入,删除都有较高的性能,我们使用双向链表(std::list)和哈希表(std::unordered_map)作为cache的数据结构,因为: 双向链表插入删除效率高(单向链表插入和删除时,还要查找节点的前节点) 哈希表保存每个节点的地址,可以基本保证在O(1)时间内查找节点 具体实现细节: 越靠近链表头部,表示节点上次访问距离现在时间最短,尾部的节点…

Description: Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise r…

class Node(object): def __init__(self,k,x): self.key=k self.val=x self.prev=None self.next=None class DoubleLinkedList(object): def __init__(self): self.tail=None self.head=None def isEmpty(self): return not self.None def removeLast(self): self.remov…

[题目] Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1…

Problem Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return…

在Leetcode上遇到了两个有趣的题目,分别是利用LRU和LFU算法实现两个缓存.缓存支持和字典一样的get和put操作,且要求两个操作的时间复杂度均为O(1). 首先说一下如何在O(1)时间复杂度内实现get方法.据鄙人所知,对于没有限定数据范围的数据,唯一拥有O(1)时间复杂度的get的数据结构就是哈希表,尽管其时间复杂度是通过概率来推算出来的.因此毋庸质疑,LRU和LFU的get方法中必定使用了哈希表的取值,相应的put方法中也必定调用了哈希表的赋值操作. 由于LRU和LFU都涉及到了选…

LRU Cache  Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise ret…

Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.set(…

leetcode刷题之后,很多问题老是记忆不深刻,因此特意开此帖: 一.对做过题目的总结: 二.对一些方法精妙未能领会透彻的代码汇总,进行时常学习: 三.总结面试笔试常见题目,并讨论最优解法及各种解法的优劣: leetcode探索中级算法 1)排序相关   快排,归并,堆排,插入,选择   1.1)基础算法原理与实现:   十大排序算法:C++   1.2) 直接使用排序算法的题目: leetcode 628. 三个数的最大乘积 1.3)通过归并排序求逆序数: 微软面试题:求一个序列的逆序对数(…

最近在准备找工作的算法题,刷刷LeetCode,以下是我的解题报告索引,每一题几乎都有详细的说明,供各位码农参考.根据我自己做的进度持续更新中......                              本文地址 LeetCode:Reverse Words in a String LeetCode:Evaluate Reverse Polish Notation LeetCode:Max Points on a Line LeetCode:Sort List LeetCode:Ins…

Here is my collection of solutions to leetcode problems. Related code can be found in this repo: https://github.com/zhuli19901106/leetcode LeetCode - Course Schedule LeetCode - Reverse Linked List LeetCode - Isomorphic Strings LeetCode - Count Primes…

Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1. set…

设计并实现最近最久未使用(Least Recently Used)缓存. 题目描述: Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key ex…

Problem Link: http://oj.leetcode.com/problems/lru-cache/ Long long ago, I had a post for implementing the LRU Cache in C++ in my homepage: http://www.cs.uml.edu/~jlu1/doc/codes/lruCache.html So this time, I am trying to use Python to implement a LRU…

https://leetcode.com/problems/lru-cache/ Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exis…

题目:LRU cache Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. . set(key, value) - Set or insert the value if the key is not already present. When the cache reached its…

题目: Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.…

插话:只写了几个连续的博客,博客排名不再是实际"远在千里之外"该.我们已经进入2一万内. 再接再厉.油! Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the ke…

Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and put. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.put(…

Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.set(…

Design and implement a data structure for Least Frequently Used (LFU) cache. It should support the following operations: get and put. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.pu…

LeetCode题解: LRU Cache 缓存设计 2014年12月10日 08:54:16 邴越 阅读数 1101更多 分类专栏: LeetCode   版权声明:本文为博主原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接和本声明. 本文链接:https://blog.csdn.net/leread/article/details/41841965 设计并实现最近最久未使用(Least Recently Used)缓存. 链接:https://oj.leetcode.c…