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…

题目简述: 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 exists in the cache, otherwise return -…

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 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…

问题描述: 设计一个LRU Cache . LRU cache 有两个操作函数. 1.get(key). 返回cache 中的key对应的 val 值: 2.set(key, value). 用伪代码描述如下: if cache中存在key then 更新value; else cache中不存在key if cache 容量超过限制 then 删除最久未访问的key else cache 容量未超过限制 then 插入新的key 问题分析: 首先了解LRU原理是:优先删除最早访问的元素.(题中…

import java.util.HashMap; import java.util.Map; public class LRUCache { private int capacity; private int len; class Data { int key; int value; Data next; Data pre; } private Map<Integer, Data> dataSet; private Data head; private Data rail; public L…

链接:https://leetcode.com/tag/design/ [146]LRU Cache [155]Min Stack [170]Two Sum III - Data structure design (2018年12月6日,周四) Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an inter…

[LeetCode]Minimum Depth of Binary Tree Given a binary tree, find its minimum depth. The minimum depth is the number of nodes along the shortest path from the root node down to the nearest leaf node. 递归和非递归,此提比较简单.广度优先遍历即可.关键之处就在于如何保持访问深度. 下面是4种代码: im…

Given an index k, return the kth row of the Pascal's triangle. For example, given k = 3, Return [1,3,3,1]. Note: Could you optimize your algorithm to use only O(k) extra space? 思路:最简单的方法就是依照[Leetcode]Pascal's Triangle 的方式自顶向下依次求解,但会造成空间的浪费.若仅仅用一个vect…

53. Maximum Subarray[leetcode] Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [-2,1,-3,4,-1,2,1,-5,4],the contiguous subarray [4,-1,2,1] has the largest sum = 6. 挑…