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BRTree红黑树-添加修正

本质还是一颗二叉搜索树,只是在其基础上增加了AddFix和RemoveFix来做平衡性修正,确保不会出现极端不平衡的情况。   【规则】 a) 根节点为黑 b) 红色节点的子节点只能是2个黑 c) 黑色节点的子节点只能是:1个红,2个红,2个黑或没有子节点,不可能出现1个黑(如下图所示) d) 任一结点到各个

If you encounter a hesitant customer

The small vendors are small businesses with very small profits and fierce competition. Customers buy things at the cheapest price. They don't buy it if they don't give it cheap. When my uncle sells vegetables in the market, customers will ask fo

红黑树与AVL树比较

红黑树与AVL树的比较: 1.AVL树的时间复杂度虽然优于红黑树,但是对于现在的计算机,cpu太快,可以忽略性能差异2.红黑树的插入删除比AVL树更便于控制操作3.红黑树整体性能略优于AVL树(红黑树旋转情况少于AVL树)红黑树的性质:红黑树是一棵二叉搜索树,它在每个节点增加了一个存储位记录节

SpringBoot----JPA

导入依赖 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql</groupId>

Python里的装饰器

装饰器 装饰器是干什么用的? 装饰器可以在不修改某个函数的情况下,给函数添加功能。 形象点来说,从前有一个王叔叔,他一个人住在家里,每天打扫家,看书。于是定义如下一个函数: def uncle_wang(): sweeping() reading() 后来呢,有一天,大头儿子一家搬到了王叔叔隔壁 :-D 。根据剧情

B. Painting Eggs

链接:https://codeforces.com/contest/282/problem/B The Bitlandians are quite weird people. They have very peculiar customs. As is customary, Uncle J. wants to have n eggs painted for Bitruz (an ancient Bitland festival). He has asked G. and A. to do the wo

RabbitMQ之工作模式

六大工作模式 RabbitMQ有以下几种工作模式 : 1、Work queues 2、Publish/Subscribe 3、Routing 4、Topics 5、Header 6、RPC 一、 Work queues 工作队列模式,采用默认的交换机,路由名称为队列名称,有多个终端消费同一个队列的时候,交换机采用轮询发送消息,通俗点说就是给第一个

转 echarts 的使用时遇到的坑 初始化和销毁,亲测有效!

  目前ECharts图表的实例化主要包含当前十七个相关方法,后期不保证有补充的节奏,就目前来说,这十七个已经够用了的。 https://blog.csdn.net/Uncle_long/article/details/80483175

HDU-1507-Uncle Tom's Inherited Land*

链接:https://vjudge.net/problem/HDU-1507 题意: Your old uncle Tom inherited a piece of land from his great-great-uncle. Originally, the property had been in the shape of a rectangle. A long time ago, however, his great-great-uncle decided to divide the land i