Dynamic Programming II

  Common dynamic programming problems (2) This article is reproduced at GitHub address: https://github.com/CyC2018/CS-Notes/ , only for personal review in the future. Integrated various data, invasion and deletion. Citation analysis: Content from official account article: https://mp.weixin.qq.com/s/lKQI0aS1MBwfPujC-m_zkA Use the dynamic ...

Posted by h123z on Sun, 22 May 2022 21:13:49 +0300

Introduction and use of RabbitMQ dead letter queue in SpringBoot

Dead letter queue can realize other processing of messages when they are not normally consumed, so as to ensure that messages will not be discarded. Before talking about the dead letter queue, let's first introduce why we need to use the dead letter queue. If you want to directly understand the dead letter docking, just jump into the "d ...

Posted by jmut on Sun, 22 May 2022 21:04:35 +0300

java algorithm dynamic programming

java-Dynamic Programming Algorithms Learning Notes Original: java-Dynamic Programming Algorithms Learning Notes-huster-stl-Blog Park (cnblogs.com)   Dynamic programming is a branch of operational research and a mathematical method to solve the optimization of decision process. Dynamic planning often appears as a test question in written inter ...

Posted by Ruchi on Sun, 22 May 2022 20:51:09 +0300

API foundation and collection Foundation (very detailed)

1. API overview and usage steps API(Application Programming Interface), application programming interface, Java API is a programmer's dictionary. It is the description document of the class provided to us in JDK. These classes encapsulate the underlying code implementation. We don't need how these classes are implemented, we just need to lear ...

Posted by mark_h_uk on Sun, 22 May 2022 18:36:01 +0300

Java learning DAY14 packaging class, teaching class, time, exception

Packaging 6. The hash code value of the wrapper object is fixed 7. The parent class of value type wrapper class is Number package cn.tedu.baozhuang; public class BZDemo1 { public static void main(String[] args) { //The hash code value of the object of the wrapper class is a fixed value System.out.println(new Integer(1).hash ...

Posted by chick3n on Sun, 22 May 2022 17:33:55 +0300

Byte buffer stream & character stream

1. Byte buffer stream 1.1 byte buffer stream construction method [application] Introduction to byte buffer stream IBufferOutputStream: this class implements buffering Output stream. It is not necessary to write bytes to the output stream of the underlying application through the call of the underlying system. Ibbufferedlnputstream: creating ...

Posted by rkstevens on Sun, 22 May 2022 17:13:09 +0300

Origin of lambda expression

Origin of lambda expression lambda expression is a concept introduced in jdk8, so if you want to use it //Define an interface interface IMovingBricks{ void lambda(); } 1, External implementation class public class TestLambda1 { public static void main(String[] args) { IMovingBricks movingBricks = new MovingBricks(); movingBricks.lambda() ...

Posted by GaryAC on Sun, 22 May 2022 15:38:37 +0300

Daily interview question 5 (List, TreeSet, set sort)

1. Can the list set add elements repeatedly? How to remove duplicate elements Solution ideas Traverse the original set Sort first and then traverse the set. If the two adjacent elements are equal, delete the latter one. Here's a mistake we often make, just right This article The blog provides the perfect solution. Convert to Set co ...

Posted by NME on Sun, 22 May 2022 14:39:20 +0300

Adapter pattern -- Design Pattern

As the name suggests, adapters have to adapt to different current configurations and solve compatibility problems. Our life is full of all kinds of adapters. The modem used for Internet access is a kind of digital to analog conversion adapter, commonly known as "cat", but now it is all optical cat, that is, the mutual conversion of op ...

Posted by villas on Sun, 22 May 2022 13:37:03 +0300

parameterType of MyBatis passed in parameter type

In the configuration of mybatis mapping interface, the use of parameterType is mentioned in the elements such as select, insert, update and delete. parameterType is an input parameter. When configuring, configure the corresponding input parameter type. parameterType has basic data types and complex data type configurations. 1. There are two typ ...

Posted by Monkee Of Evil on Sun, 22 May 2022 13:27:16 +0300