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Vector is a vector type, which can hold many types of data, such as several integers, so it is called a container. Vector is an important member of C++ STL. When using it, you need to include the header file: #include<vector>; 1. Initialization of vector: there are five ways, as shown in the following example: (1) vect ...

A normal queue is a first in, first out data structure in which elements are appended at the end of the queue and taken out from the queue head. In the priority queue, elements are given priority. When accessing an element, the element with the highest priority is taken out first. Priority queues have the behavior characteristics of largest in, ...

Train of thought: Each time, judge whether the root node is empty first, and return directly if it is empty. Otherwise, judge the value of the root node, and judge the left and right subtrees respectively within the range. Otherwise, for example, if the value of the root node is less than L, then all the subtrees on t ...

Original title: Given an array where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1. Example: Given the sorted array: [-10,-3,0,5,9], One p ...

Why process is needed Process is the basic unit of resource allocation and scheduling. As the carrier of the independent operation of the program, the process ensures the normal execution of the program. The existence of processes makes the utilization of operating system resources greatly improved. Message queue Message queuing is a container ...

A 1M bandwidth cloud server, the theoretical maximum download speed is 128kb/s Nowadays, the file size after the front-end project is often a few meters, so it takes more than 10 seconds for users to access it God, how could a user wait so long for you so kindly? He's already gone So how to optimize the access speed? Listen to meExperience ...

Beginning The company organizes the examination. Once it gets the examination question, it's Joseph Ring in the algorithm. Think carefully about what the teacher forgot before, or do you think about it package basic.gzy; import java.util.Iterator; import java.util.LinkedList; import java.util.Queue; /** * Joseph Ring number game, for example ...

Introduction Before, single table query was often used in projects. When multiple entities are involved in query, cloud intelligence's comprehensive query library is often used directly. How to query is unknown; When writing Alice's make-up test management, it needs to show that the total score is less than the pass score (score setting), and ...

As for why we need to encrypt and decrypt strings, and compare the advantages and disadvantages of various encryption and decryption methods, this article will not talk about how to make some practical code for emergency friends Don't talk too much. Look at the code: import java.security.Key; import java.security.MessageDigest; i ...

GoSTL GoSTL is a go language data structure and algorithm library, similar to C + + STL, but more powerful. Combined with the characteristics of go language, most of the data structures have realized thread safety. When creating objects, you can specify whether to turn it on through configuration parameters. Function list data structure slic ...