字符串 字符leetcode reverse
【LeetCode1454. 活跃用户】MySQL 用户自定义变量,面向过程编程解决"连续天数"的问题
[TOC] # 题目地址 https://leetcode.cn/problems/active-users/description/ # 题目描述 活跃用户 是指那些至少连续 5 天登录账户的用户。 编写解决方案, 找到 活跃用户 的 id 和 name。 返回的结果表按照 id 排序 。 # 代 ......
leetcode刷题日记
unordered_set散列哈希表:[C++ STL unordered_set容器完全攻略 (biancheng.net)](http://c.biancheng.net/view/7250.html) unordered_map:[详细介绍C++STL:unordered_map - 朤尧 - ......
fastjson对接口参数的某个字段不打印输出,如文件的base64字符串
fastjson对接口参数的某个字段不打印输出,如文件的base64字符串 package com.example.core.mydemo.json5; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.annotation. ......
Leetcode 160. 链表相交(Intersection of two linked lists lcci)
[题目链接](https://leetcode.cn/problems/intersection-of-two-linked-lists-lcci/description) 给定两个单链表的头节点headA和headB, 请找出并返回两个单链表相交的起始节点. 如果两个链表没有交点, 返回null. ......
C++11新特性——1.1-1.3 字符串原始字面量,超长整型long long,类成员变量的快速初始化
1.1 字符串原始字面量 1.2 超长整型long long 1.3 类成员变量的快速初始化 1.1 原始字面量 链接:https://subingwen.cn/cpp/R/ 语法 R"xxx(原始字符串)xxx" 原始字面量 表示 固定的值。 原子字面量 两大类型:数字类型,字符串类型 (一个小补 ......
iwebsec-sql注入 06 宽字节字符型注入
## 01、题目分析 宽字节字符型注入,因为源代码中传参get值的时候,有一个addslashes() 函数,是返回在预定义字符(' " \)之前添加反斜杠的字符串。 也就是说,当我们按照正常的字符型注入的时候,会在'前加入\,也就是说,我们在url上 ```SQL -- url写入 ?id=1' ......
Leetcode 1388. 3n 块披萨
(本文只提供了解题思路的思考,[原文作者题解连接](https://leetcode.cn/problems/pizza-with-3n-slices/solutions/527304/dpjie-fa-yu-da-jia-jie-she-2-de-chai-bie-ihso/)) 先把题目粘贴在这 ......
leetcode1372dp求交错路径长
bfd+dp unordered_map<TreeNode* ,int>d,p; queue<pair<TreeNode* ,TreeNode*>>q; int dp(TreeNode* root){ d[root]=p[root]=0; q.push({root,nullptr}); while( ......
2023-08-18:用go写算法。你会得到一个字符串 text, 你应该把它分成 k 个子字符串 (subtext1, subtext2,…, subtextk)。 要求满足: subtexti 是
2023-08-18:用go写算法。你会得到一个字符串 text, 你应该把它分成 k 个子字符串 (subtext1, subtext2,…, subtextk)。 要求满足: subtexti 是 非空 字符串, 所有子字符串的连接等于 text , ( 即subtext1 + subtext2 ......
字符设备驱动-12.misc杂项字符设备驱动
#1 引入misc device ## 1.1传统cdev方式 char_drv.c ``` #include #include #include #include #include #include #include #include #include #include #include stat ......
ElementUI 后台管理模板中使用自定义指令截取字符串长度加省略号
在使用vue3 + ElementPlus开发中,尤其在开发cms项目时,新闻标题需要控制字符串长度。重复写截取字符串样式非常麻烦。 在最近开发 Vue + ElementPlus 后台管理框架时,装成一个自定义指令。方便使用。 废话不多说,直接上代码。 1、在项目根目录新建一个文件夹: dir ......
[LeetCode][70]climbing-stairs
# Content You are climbing a staircase. It takes n steps to reach the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can ......
[LeetCode][53]maximum-subarray
# Content Given an integer array nums, find the subarray with the largest sum, and return its sum. Example 1: Input: nums = [-2,1,-3,4,-1,2,1,-5,4] Ou ......
[LeetCode][55]jump-game
# Content You are given an integer array nums. You are initially positioned at the array's first index, and each element in the array represents your ......
[LeetCode][62]unique-paths
# Content There is a robot on an m x n grid. The robot is initially located at the top-left corner (i.e., grid[0][0]). The robot tries to move to the ......
[LeetCode][42]trapping-rain-water
# Content Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raini ......
[LeetCode][10]regular-expression-matching
# Content Given an input string s and a pattern p, implement regular expression matching with support for '.' and '*' where: '.' Matches any single ch ......
[LeetCode][32]longest-valid-parentheses
# Content Given a string containing just the characters '(' and ')', return the length of the longest valid (well-formed) parentheses substring. Examp ......
[LeetCode][64]minimum-path-sum
# Content Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right, which minimizes the sum of all numbers along ......
LeetCode[10]RegularExpressionMatching
# Content Given an input string s and a pattern p, implement regular expression matching with support for '.' and '*' where: '.' Matches any single ch ......
LeetCode[32]LongestValidParentheses
# Content Given a string containing just the characters '(' and ')', return the length of the longest valid (well-formed) parentheses substring. Examp ......
LeetCode[42]TrappingRainWater
# Content Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raini ......
LeetCode[53]MaximumSubarray
# Content Given an integer array nums, find the subarray with the largest sum, and return its sum. Example 1: Input: nums = [-2,1,-3,4,-1,2,1,-5,4] Ou ......
LeetCode[62]UniquePaths
# Content There is a robot on an m x n grid. The robot is initially located at the top-left corner (i.e., grid[0][0]). The robot tries to move to the ......
LeetCode[55]JumpGame
# Content You are given an integer array nums. You are initially positioned at the array's first index, and each element in the array represents your ......
LeetCode[64]MinimumPathSum
# Content Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right, which minimizes the sum of all numbers along ......
mysql 如何 在用逗号分隔开的字符串中精确查询出 多个字符串
例如 : 在MySQL 字段中有值为 1,2,3,4,5,6,8,10 99,98,91,95,97 两条数据 而我想查出 两个数据 1 和 95 如果使用 find_in_set 查询 则无法查询 出来 则需要使用mysql 内置 方法 SELECT * FROM pay_config WHERE ......
3 字符串操作
##### 3 字符串操作 常用的字符串操作相关的方法: ``` s.split() 字符串切割 s.substr(start, len) 字符串切割, 从start开始切, 切len个字符 s.substring(start, end) 字符串切割, 从start切割到end s.length 字 ......
C# 字符串截取
C# 字符串截取 一般可以用到 subsring、Split、或者替换Replace、remove等 1、substring 只传递一个参数 String sb = "bbbdsajjds"; sb.substring(2);// 将字符串从索引号为2开始截取,一直到字符串末尾。(索引值从0开始); ......
作为子字符串出现在单词中的字符串数目
给你一个字符串数组 patterns 和一个字符串 word ,统计 patterns 中有多少个字符串是 word 的子字符串。返回字符串数目。 子字符串 是字符串中的一个连续字符序列。 示例 1: 输入:patterns = ["a","abc","bc","d"], word = "abc" ......