Programmer Think

1. Basic introduction Huffman tree, alias "Huffman tree", "Huffman tree", "optimal tree" and "optimal binary tree" Given n weights as n leaf nodes, a binary tree is constructed. If the weighted path length (wpl) of the tree reaches the minimum, such a binary tree is called the optimal binary tree, also ...

(1) Requirement description Build PDF template and realize dynamic insertion of some data. It is mainly divided into three components: ordinary text, check box, QR code and dynamic insertion of pictures (2) Make template Because the commonly used software of pdf doesn't support editing, we first use WPS to edit in the form of Word to mak ...

Official website: https://spring.io/projects/spring-data-redis Spring Data Redis is a part of the spring data series. Redis can be easily configured and accessed from spring applications, and supports low-level and high-level abstract interfaces. You can see that spring data provides the following technical solutions: There are already exce ...

subject Enter the integer array arr to find the minimum number of k. For example, if you enter 8 numbers: 4, 5, 1, 6, 2, 7, 3 and 8, the smallest 4 numbers are 1, 2, 3 and 4. Example 1: Input: arr = [3,2,1], k = 2 output: [1,2] or [2,1] example 2: Input: arr = [0,1,2,1], k = 1, output: [0] Restrictions: 0 <= k <= arr.length &l ...

catalogue   Why do I need dubbo II. Dubbo technical architecture Third, Dubbo starts getting started 3.1 server 3.2 consumer side 4. Join zookeeper as the registration center 4.1 server 4.2 consumer side Five configurations 5.1 API configuration mode 5.2 annotation configuration mode Six common scenarios 6.1 check at startup 6.2 ...

preface *** I think the basic boss can leave early. Take time to update this column after work   java Foundation 1. What is object-oriented?   object oriented is to pay more attention to the participants (objects) of things and what they need to do. (process oriented, paying more attention to every step and sequence of things) it ...

Recently, when using Spring event framework to write business development, due to the functional limitations of Spring event framework, it can not well meet our development needs. Therefore, after reading the Spring event source code, the Spring event framework has been expanded. The process will be described in detail below. Problem Descripti ...

Give you an integer array nums, with a sliding window of size k moving from the leftmost side of the array to the rightmost side of the array. You can only see k numbers in the sliding window. The sliding window moves only one bit to the right at a time. Returns the maximum value in the sliding window https://leetcode-cn.com/problems/sliding-w ...

I preface This article introduces the main process of SpringBoot Application The main process entry of spring application is very simple: @SpringBootApplication public class BaseApplication { public static void main(String[] args) { SpringApplication.run(BaseApplication.class, args); } } 1 > use @SpringBootApplication Not ...

Write before: 1. This article is a review of all projects in the first phase of the fifth part of java learning (express e station part - corresponding to the first phase of the first part of Java System - 04 array task) 2. Overall project series blog (including overall express e-station Series) 3. Complete java system link (more Java content t ...