Tag：data structure
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Time：2020-11-26
Set is a new data structure of ES6, which is characterized by the absence of members with the same value Set Set itself is a constructor used to generate the set data structure const set = new Set(); [1,2,2,3,4,5,6,7,5,8,9].forEach((x)=>{ set.add(x);}) console.log(set); // [1,2,3,4,5,6,7,8,9] The set constructor takes an array or class array as a […]
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Time：2020-11-26
A double ended queue is an ordered collection of items similar to a queue. In fact, it is a queue in essence. It is only a queue with both front-end and back-end supporting insert and delete operations, which is more practical. Therefore, there is no such statement as FIFO. We can do this through arrays, […]
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Time：2020-11-25
Author: little brother FuBlog: https://bugstack.cn Precipitation, sharing, growth, let yourself and others can have a harvest! 1、 Preface The most important thing to buy a house is the house pattern! If you can accept the geographical location and square meter price, the most important thing is the housing pattern.what? mother-in-law! You A kind of Get […]
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Time：2020-11-24
const arr = [1, 2, 3]; //For loop: can use break, continue, return to control the loop; access elements indirectly through subscript for (let index = 0; index < arr.length; index++) { const element = arr[index]; console.log(element); } //Foreach: you can’t use break and continue to control the loop (the function’s original intention is to […]
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Time：2020-11-24
Linked list data structure To store multiple elements, arrays may be the most commonly used data structure in JS, but inserting or removing items from the beginning or middle of an array is costly because elements need to be moved.A linked list stores an ordered set of elements, but different from an array. The elements […]
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Time：2020-11-22
preface Multithreading concurrency is a must in an interview. Students who just graduated this year are looking for internships or friends who have been interviewing recently. You should have the same question, that is, multithreading and high concurrency Recently, when I was chatting with friends in charge of interviews in Tencent, Alibaba, including byte and […]
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Time：2020-11-21
1. What is data structure? Data structure is a special way to organize and store data in computer, which makes data access and modify efficiently. More precisely, data structure is a collection of data values, which represents the relationship between data, and also includes functions or operations acting on data. 1.1 why do we need […]
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Time：2020-11-19
What is an array? Forget in which book I saw the sentence “understand the conceptual things, you will learn 70%” Back to the topic, what is an array?Array is a linear table data structure. It uses a continuous set of memory space to store a set of data of the same type There are two […]
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Time：2020-11-16
Visitor mode visitor Intro Visitor pattern, which represents an operation on each element in an object structure, enables you to define new operations on each element without changing its class. Usage scenarios Visitor pattern is suitable for the system with relatively stable data structure. It decouples the operation between data structure and scope structure, and […]
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Time：2020-11-14
About redis Redis is an open source (BSD licensed) in memory data structure server that can be used as a database, cache and message queuing agent It supports string, hash table, list, collection, ordered collection, bitmap, hyperloglogs and other data types Built in replication, Lua script, LRU recall, transaction and different levels of disk persistence […]
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Time：2020-11-12
Learning programming, data structure is the basic knowledge you must master, so what is data structure? WeChat official account: Programmer’s book; author Huang Xiaoxie In fact, data structure is used to describe a mathematical model of data stored in the computer, because the computer has to store a lot of messy data, so it also […]
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Time：2020-11-11
When you are learning python, some people will ask “what level of Python to learn before you can go out to find a job”. For students studying Python in Python training institutions, this is not a problem, because according to the python syllabus, generally there will be no problems, but for self-learning python, it is […]
