序列leetcode 1143
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( ......
c++ 占位符和序列化
1 #include <nlohmann/json.hpp> 2 #include <iostream> 3 #include <iomanip> 4 5 using json = nlohmann::json; 6 7 int main() 8 { 9 std::cout << std::setw ......
[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 ......
【springMVC】全局json序列化配置
1.概述 现在我们进行web开发,一般都要设计成RESTful风格的API,通过json格式的数据进行交互。但是前端传入的 json 数据如何被解析成 Java 对象作为 API入参,后端返回结果又如何将 Java 对象解析成 json 格式数据返回给前端,在整个数据流转过程中,这是由谁来完成的呢? ......
【LeetCode1270. 向公司CEO汇报工作的所有人】with recursive找到某节点所有的后代
# 题目地址 https://leetcode.cn/problems/all-people-report-to-the-given-manager/description/ # 代码 ``` WITH RECURSIVE cte_subordinates AS ( -- 基础情况: 找到直接下属 ......
【剑指Offer】61、序列化二叉树
# 【剑指Offer】61、序列化二叉树 **题目描述:** 请实现两个函数,分别用来序列化和反序列化二叉树。 **解题思路:** 序列化是指将结构化的对象转化为字节流以便在网络上传输或写到磁盘进行永久存储的过程。反序列化是指将字节流转回结构化的对象的过程,是序列化的逆过程。 受第4题:重建二叉树的 ......
matlab使用长短期记忆(LSTM)神经网络对序列数据进行分类|附代码数据
全文下载链接:http://tecdat.cn/?p=19751 本示例说明如何使用长短期记忆(LSTM)网络对序列数据进行分类 。 最近我们被客户要求撰写关于LSTM的研究报告,包括一些图形和统计输出。 要训练深度神经网络对序列数据进行分类,可以使用LSTM网络。LSTM网络使您可以将序列数据输入 ......
【leetcode】1.two sum
第一题给我干懵了...想达到这个要求把我脑壳都想痛了...Follow-up: Can you come up with an algorithm that is less than O(n2) time complexity? 一开始想过用map,但是不能解决重复key的问题。 然而我用sort, ......
Prüfer 序列
由于本人过菜,故写文备忘。 参考资料: # $\color{Violet}\mathsf{Prüfer}\ 序列$ Prüfer 序列常用于组合计数问题上。 Prüfer 序列可以将一个带标号 $n$ 个结点的树用 $[1,n]$ 中的 $n-2$ 个整数表示。你也可以把它理解为完全图的生成树与数列 ......
oracle 序列的使用
1. 创建oracel 序列 sql CREATE SEQUENCE TEST_0817 INCREMENT BY 1 START WITH 1 MAXVALUE 99 CYCLE NOCACHE; sequence_name: 序列的名称。 start_value: 序列的起始值。 increme ......
《剑指Offer》-31-栈的压入、弹出序列
经典的选择题,但是这里要求用代码实现 我们可以根据 pop 结果去模拟这个过程,如果能够拟合,就是 true 什么情况下拟合成功? 两个指针都指向了数组末尾,同时栈空 太复杂了,条件能否简化一点? 什么时候拟合失败? pushed 指针指向末尾全部压入栈中,但是poped 数组指针卡住了,不匹配导致 ......
【学习记录】linux下获取硬盘序列号
在linux下获取硬盘序列号方法一:$ hwinfo --disk 方法二:$ cat /sys/class/block/sda/device/wwid$ cat /sys/class/block/nvme0n1/device/serial 方法三:$ udevadm info --query=al ......
Feign接口返回值加多层泛型,但没有反序列化彻底
### 1、问题描述 接口返回值加多层泛型,但没有反序列化彻底 ![](https://img2023.cnblogs.com/blog/1392300/202308/1392300-20230817141500828-542065681.png) ### 2、问题原因 jackson-databi ......
asp.net core Webapi中返回400错误中的‘Null集合属性序列化Json’情况
当序列化Json时,有集合类型的属性的值为Null,则序列化后的json就有问题,不能通过asp.net core WebApi的校验 解决方法是: 只需要对集合默认初始化即可 ......
代码随想录算法训练营第十八天| 513.找树左下角的值 112. 路径总和 106.从中序与后序遍历序列构造二叉树
找树左下角的值 卡哥建议:本地递归偏难,反而迭代简单属于模板题, 两种方法掌握一下 题目链接/文章讲解/视频讲解:https://programmercarl.com/0513.%E6%89%BE%E6%A0%91%E5%B7%A6%E4%B8%8B%E8%A7%92%E7%9A%84%E5%80% ......
LeetCode 1581. 进店却未进行过交易的顾客
##题目 表:Visits ```sql + + + | Column Name | Type | + + + | visit_id | int | | customer_id | int | + + + visit_id 是该表中具有唯一值的列。 该表包含有关光临过购物中心的顾客的信息。 ``` ......