总和leetcode 39
LeetCode 1011. Capacity To Ship Packages Within D Days 二分答案
A conveyor belt has packages that must be shipped from one port to another within `days` days. The ith package on the conveyor belt has a weight of $w ......
阿里云centos Can't connect to MySQL server on ':3306' (61)
Can't connect to MySQL server on ':3306' (61) /etc/mysql/my.cnf 修改bind-address也不行mysql给root远程授权也不行阿里云安全组也添加了3306最后发现是防火墙问题解决办法 firewall-cmd --zone=pub ......
leetcode练习
## 分类 题单：[code](#code) 难度：[简单](#Simple) [中等](#middle) [困难](#hard) 类型：[数组](#数组) [链表](#链表) [字符串](#字符串) [二叉树](#二叉树) [排序](#排序) 解法：[递归和迭代](#递归和迭代) [滑动窗口 ]( ......
leetcode 546. 移除盒子
1. 题目 读题 链接：https://www.nowcoder.com/questionTerminal/a5390d76441647fbb182f34bee6a1ca7来源：牛客网一维消消乐 小v在vivo手机的应用商店中下载了一款名为“一维消消乐”的游戏，介绍如下： 1、给出一些不同颜色的豆子 ......
uniapp专栏 —— vscode报错 'uni' is not defined.
## 写在前面 这些内容基于通过cli搭建的uniapp项目，使用了vite4,ts4.9,vue3（组合式API,setup语法糖）。如果有版本不一致，请谨慎参考。 ## 正文 uni是一个全局变量，但是eslint没有识别到。 ### 避免这个错误报错 在.eslintrc.js文件中加上配置 ......
[LeetCode] 2461. Maximum Sum of Distinct Subarrays With Length K
You are given an integer array nums and an integer k. Find the maximum subarray sum of all the subarrays of nums that meet the following conditions: T ......
[LeetCode] 2222. Number of Ways to Select Buildings
You are given a 0-indexed binary string s which represents the types of buildings along a street where: s[i] = '0' denotes that the ith building is an ......
Leetcode日记
| 日期 | 题号 | 题目 | 解法 | 难度 | | | | | | | | 2023-07-11 | 2741 | [给定一个互不相同的正整数数组，找出**特别排列**（相邻元素互模任一为0）的总数目。取余](https://leetcode.cn/problems/special-permu ......
[未解决] vue transform-blocks解析源代码报错：Illegal tag name. Use '<' to print '<'.
报错内容： [vite] Internal server error: Illegal tag name. Use '<' to print '`标签后报错，但其他vue文件可以正常读取和展示。 报错的文件，去掉``标签就可以正常加载。报错的方法是vue-compiler的`baseParse()` ......
[LeetCode] 874. Walking Robot Simulation
A robot on an infinite XY-plane starts at point (0, 0) facing north. The robot can receive a sequence of these three possible types of commands: -2: T ......
[LeetCode] 2597. The Number of Beautiful Subsets
You are given an array nums of positive integers and a positive integer k. A subset of nums is beautiful if it does not contain two integers with an a ......
LeetCode 852. Peak Index in a Mountain Array 二分
An array arr a mountain if the following properties hold: * `arr.length` >= 3 * There exists some i with `0 arr[i + 1] > ... > arr[arr.length - 1] ``` ......
invalidate the cache in Spark by running 'REFRESH TABLE tableName' command in SQL or by recreating the Dataset/DataFrame involved
``` ... 1 more Caused by: java.io.FileNotFoundException: File does not exist: hdfs://ns1/user/hive/warehouse/dw.db/dw_uniswapv3_position_detail/pk_day ......
加速github访问、git使用及其原理、错误error: remote origin already exists，error: src refspec master does not match any，fatal: unable to access 'https://github.com/xxx.git'（你的仓库地址）
访问Github Github：https://github.com 修改hosts 1.在C:\Windows\System32\drivers\etc找到hosts 2.将hosts文件复制到其他位置（D盘等等），再复制一份备份 3.将 #github 20.205.243.166 github ......
关于网址最后的'/'
如果是True， 在url.py里配置成 path("login/user/", view.user) 浏览器中输入 http://192.168.0.1:8000/login/user 回车之后会在后面自动加/ 请求方式只能是GET 不能是POST ......
Troubles in RunBase's Pack and Unpack Methods
### Trouble description: > When user processed the batch job after clearing the usage data, dialog's parameters will catch the current data from proce ......
leetcode104二叉树搜索
深度优先搜索，递归 maxDepth(TreeNode* root){ if(!root)return 0; return max(maxDepth(root->left),maxDepth(root->right))+1; } 广度优先搜索，队列 queue<TreeNode*>q; q.push ......
LeetCode 301. 删除无效的括号
``` class Solution { public: vector ans; vector removeInvalidParentheses(string s) { //lr分别记录要删除的左右括号数量 int l=0,r=0; for(auto c:s) if(c=='(') l++; els ......
IDEA 启动报错：Error running 'DemoApplication': Command line is too long. Shorten command line for DemoApplication or also for Spring Boot default configuration
IDEA启动报错： Error running 'DemoApplication': Command line is too long. Shorten command line for DemoApplication or also for Spring Boot default configur ......
[LeetCode] 1851. Minimum Interval to Include Each Query
You are given a 2D integer array intervals, where intervals[i] = [lefti, righti] describes the ith interval starting at lefti and ending at righti (in ......
TypeError: iter() returned non-iterator of type 'MyIterable'
1 class MyIterable: 2 def __init__(self): 3 self.data = [1, 2, 3] 4 5 def __getitem__(self, index): 6 return self.data[index] 7 8 def __iter__(self): ......
Github：提交代码到Github上报错Git: fatal unable to access "***/: Failed to connect to github.com port 443 after 21074 ms: Couldn't connect to server的解决
在国内网环境，使用VScode提交代码到Github上时，因为国的防火墙问题，经常会报错： Git: fatal unable to access "https://github.com/***/***.io.git/:Failed to connect to github.com port 443 ......
39软件系统测试
功能测试 性能测试： 1 负载测试：各种负载情况下软件的性能（罗列各种情况下的系统的性能） 2、压力测试：测上限 3、强度测试：测下限 4、容量测试（并发测试）：同时在线的用户数 5、可靠性测试 ......
idea报错 java: You aren't using a compiler supported by lombok, so lombok will not work and has been dis
转‘’： idea较新版本识别不了lombok生成的方法 在这增加参数： -Djps.track.ap.dependencies=false ......
leetcode2130反转链表
1尾插法：记录前面的节点，使后面的节点指向前面的节点；记后面的节点为now。因为要不停移动now，使其移动所以要临时记录原来之后的节点。 ListNode* now=slow->next; ListNode* pre=nullptr; while(now){ ListNode* node=now-> ......
vue开发 tinymce.js富文本插件报错：Cannot read properties of undefined (reading 'open')
应该是预加载的问题 因为需要同时展示多个富文本框 所以网上搜索到的 把v-if 换成 v-show是行不通的 最后想到办法 就是 再最外面再加一个 富文本 宽高设置成0 这样里面的富文本就能 正常使用了 k-rich-editor 是基于 tinymce 封装起来的富文本编辑器 ......
python包报错ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with 'OpenSSL 1.0.2k-fips 26 Jan 2017'
报错：ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the ‘ssl’ module is compiled with OpenSSL 1.1.0h 27 Mar 2018. 解决办法：Terminal窗口执行：p ......
8-102-(LeetCode- 207&210) 课程表II
1. 题目 读题 210. 课程表 II 考查点 2. 解法 思路 这道题的解答思路是使用拓扑排序来判断有向图是否有环，如果有环，说明无法完成所有课程，如果没有环，输出拓扑排序的结果。拓扑排序的基本思想是从有向图中选择一个没有前驱（即入度为0）的顶点并输出，然后从图中删除该顶点和所有以它为起点的有向 ......
You don't have write permissions for the /System/Library/Frameworks/Ruby.framework/Versions/x.x/usr/lib/ruby/gems/x.x.x directory.
Gem Error ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /System/Library/Frameworks/Ruby.framework ......
LeetCode 287. 寻找重复数
``` class Solution { public: int findDuplicate(vector& nums) { if(nums.size()<2) return nums[0]; int n=nums.size(); int fast=0,slow=0; do { slow=nums[ ......