1. Data structure of ArrayList The underlying data structure of ArrayList is an array. The type of array elements is Object type. All operations on ArrayList are based on arrays. 2. Thread safety of ArrayList The operation of adding elements to ArrayList is carried out in two steps, that is, the first step is to […]
Tag: arraylist
2023/11/7–C#–The difference between generics and Object types, generic constraints, ArrayList variable array, Dictionary dictionary class in C#….
1. Use of generics Generics is a programming concept that allows you to write code that can handle non-specific data types, thereby improving code reusability and type safety. Generics allow you to write common algorithms, data structures, and methods to adapt to a variety of different data types without having to write specific code for […]
Data structure – Java custom code implementation sequence table, including test cases and the use of ArrayList and related algorithm questions
Welcome to dream_ready’s blog, I believe you are also interested in this blog o (ˉ▽ˉ；) Introduction to ArrayList and comprehensive step-by-step tutorial on how to use it (with source code), using ArrayList to implement the shuffling algorithm, and 3 people taking turns taking cards (with all source code) Table of Contents Introduction to sequence tables […]
Let’s take a look at the in-depth analysis of the CopyOnWriteArrayList thread-safe collection from the source code.
Table of Contents 1 Introduction 2. A brief overview of the principle of CpoyOnWriteArrayList 3. CopyOnWriteArrayList source code analysis 3.1 Interpretation of property constructor 3.2 get method analysis 3.3 add method analysis 3.4 set method analysis 3.5 Remove method analysis 4. Summary 1. Foreword Students who have used the ArrayList collection should generally know that […]
ArrayList underlying logic analysis
Let’s talk about the conclusion first 1.ArrayList maintains an array elementData of type Object 2. When creating an ArrayList object, if a no-parameter constructor is used, the initial elementData capacity is 0. When adding for the first time, the elementData is expanded to 10. If it needs to be expanded again, the elementData is expanded […]
ArrayLIst source code analysis – Java8
Article directory ArrayList Inheritance and implementation Attributes static constant Construction method Add to delete index deletion Delete specified element Iterator hasNext next method remove method list iterator think ArrayList When creating a collection using empty parameters, an array with a default length of 0 is created at the bottom When adding the first element, the […]
When to use LinkedList instead of ArrayList in Java?
Content from DOC https://q.houxu6.top/?s=When to use LinkedList instead of ArrayList in Java? I always use it like this: List<String> names = new ArrayList<>(); I use interfaces as type names for portability so that I can repurpose my code when I ask questions like this. When should I use LinkedList instead of ArrayList or vice versa? […]
Java SeriesArrayList
ArrayList Add element access element Modify elements Delete element Calculate size Iterate over a list of arrays Other reference types ArrayList sorting Java ArrayList method Series of articles Series of articles version record introduction The ArrayList class is an array that can be dynamically modified. The difference from an ordinary array is that it has […]
Sequence listArrayList
About the author: zoro-1, currently a sophomore, currently learning Java, data structures, etc. Author’s homepage: zoro-1’s homepage Everyone is welcome to like Collect ? Follow! Sequence table concept Arraylist Construction method Related methods Traversal operation Custom Arraylist interface Implementation class Concept A sequence table is a linear structure that uses a storage unit with a […]
The difference between ArrayList and LinkedList
1. ArrayList 1.ArrayListIntroduction In the collection framework, ArrayList is an ordinary class that implements the List interface. The specific framework diagram is as follows: 【 Description] 1. ArrayList is implemented in a generic manner and must be instantiated before use. 2. ArrayList implements the RandomAccess interface, indicating that ArrayList supports random access 3. ArrayList implements […]