Source: Internet What exactly is the point of requesting a merge? Let’s look at the picture below. picture Suppose we have three users (user IDs are 1, 2, and 3 respectively). Now they all need to query their basic information and request to the server. The server requests the database and issues three requests. We […]
Tag: double
One step ahead, double the efficiency: PieCloudDB Database pre-aggregation feature makes query speed soar!
In the era of big data, how to effectively manage and process massive data has become a core challenge for enterprises. To this end, Tuoshupai has launched its first data computing engine, PieCloudDB Database, as a new cloud-native virtual data warehouse designed to provide more efficient and flexible data processing solutions. The design concept of […]
Thoughts on the problem of double pointer algorithm
Hello everyone, my name is Fangyuan. This article is a summary of the double pointer algorithm. I divided it into array and string type questions. You can practice in the order of the article questions. If you want to find a route to solve the questions, you can refer toGithub: LeetCode. Array Pointers at both […]
Java: Use the BigDecimal class to cleverly handle the precision loss of the Double type
Key points of this article Briefly describe the reasons why precision is lost when converting floating point from decimal to binary. Introduce the differences between several ways to create BigDecimal. A collection of tools for high-precision calculations. I learned the provisions of Alibaba Java Development Manual on BigDecimal equality. Classic problem: loss of precision of […]
Algorithm Special Topic: Double Pointers
Table of Contents Question 1: Moving zero Question 2: Copy zero Topic 3: Happy Numbers Topic 4: The container with the most water Question 5: Number of valid triangles Question 6: The sum of two numbers is s Question 1: Moving Zero Given an array nums, write a function that moves all zeros to the […]
Weekly competition 367 (simulation, enumeration + ordered hashing, same-direction double pointers, suffix decomposition)
Article directory Weekly competition 367 [2903. Find the index I that satisfies the difference condition](https://leetcode.cn/problems/find-indices-with-index-and-value-difference-i/) simulation [2904. The shortest and lexicographically smallest beautiful substring](https://leetcode.cn/problems/shortest-and-lexicographically-smallest-beautiful-string/) enumerate Double pointers in the same direction [2905. Find indexes that satisfy the difference condition II](https://leetcode.cn/problems/find-indices-with-index-and-value-difference-ii/) enum + ordered hash [2906. Construct product matrix](https://leetcode.cn/problems/construct-product-matrix/) prefix and suffix decomposition [238. Product of […]
“Data Structure, Algorithm and Application C++ Language Description” Using C++ language to implement array double-ended queue
“Data Structure, Algorithm and Application C++ Language Description” Using C++ language to implement array double-ended queue For the complete compilable and running code, see: Github::Data-Structures-Algorithms-and-Applications/_16arrayDeque/ Definition Definition of queue A queue is a linear table in which insertion and deletion operations are performed at different ends of the table. The end where elements are inserted […]
<JavaDS> Queue, double-ended queue (Deque), circular queue
Table of Contents 1. Queue 1.1 Overview of Queue 1.2 Implementation of Queue 1.3 Queue method 1.4 Queue application scenarios 2. Double-ended queue (Deque) 2.1 Overview of double-ended queue (Deque) 2.2 Double-ended queue (Deque) method 3. Circular Queue 3.1 Overview of Circular Queue 3.2 Implement loop of array subscripts 3.3 Determine the status of the […]
[Java Queue] Queue Queue (PriorityQueue priority queue) interface and double-ended queue Deque (LinkedList linked list, ArrayDeque) interface in Java
Queue (PriorityQueue priority queue) interface and double-ended queue Deque (LinkedList, ArrayDeque) interface in Java 1. Queue interface 1. Classes that implement queues 2. Inherit the Queue interface 3. Workflow of queue data structure 4. Use Queue 5.PriorityQueue priority queue 2. Deque interface 1. Class that implements Deque 2. How a double-ended queue works 3. Use […]
Since the project used the interface request merge, the efficiency has been doubled!
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