链表:是一个有序的列表,但是它在内存中是分散存储的,使用链表可以解决类似约瑟夫问题,排序问题,搜索问题,广义表
单向链表,双向链表,环形链表
PHP的底层是C,当一个程序运行时,内存分成五个区(堆区,栈区,全局区,常量区,代码区)
规定:基本数据类型,一般放在栈区
复合数据类型,比如对象,放在堆区
定义一个类Hero
定义成员属性排名 $no
定义成员属性姓名 $name
定义成员属性昵称 $nickname
定义成员属性 $next,是一个引用,指向下一个Hero对象
定义构造函数,传递参数:$no,$name,$nickname
创建一个头head,该head只是一个头,不放入数据
获取$head对象,new Hero()
获取第一个Hero对象$hero,new Hero(1,”宋江”,”及时雨”)
连接两个对象,$head->next=$hero
获取第二个Hero对象$hero2,new Hero(2,”卢俊义”,”玉麒麟”)
连接两个对象,$hero->next=$hero2
遍历链表
定义一个函数showHeros(),参数:$head对象
定义一个临时变量$cur来存储 $head对象
while循环,条件$cur->next不为null
打印一下
指针后移,$cur=$cur->next
PHP版:
<?php /** * 英雄类 */ class Hero{ public $no; public $name; public $nickname; public $next=null; public function __construct($no='',$name='',$nickname=''){ $this->no=$no; $this->name=$name; $this->nickname=$nickname; } } class LinkListDemo{ public static function main(){ $head=new Hero(); $hero1=new Hero(1,"宋江","及时雨"); $head->next=$hero1; $hero2=new Hero(2,"卢俊义","玉麒麟"); $hero1->next=$hero2; LinkListDemo::showHeros($head); } /** * 展示英雄 */ public static function showHeros($head){ $cur=$head; while($cur->next!=null){ echo "姓名:".$cur->next->name."<br/>"; $cur=$cur->next; } } } LinkListDemo::main();
java版:
class Hero{ public int no; public String name; public String nickname; public Hero next=null; public Hero(){ } public Hero(int no,String name,String nickname) { this.no=no; this.name=name; this.nickname=nickname; } } public class LinkListDemo { /** * @param args */ public static void main(String[] args) { Hero head=new Hero(); Hero hero1=new Hero(1, "宋江", "及时雨"); head.next=hero1; Hero hero2=new Hero(2, "卢俊义", "玉麒麟"); hero1.next=hero2; showHeros(head); } /** * 展示英雄 * @param head */ public static void showHeros(Hero head){ Hero cur=head; while(cur.next!=null){ System.out.println("姓名:"+cur.next.name); cur=cur.next; } } }
以上这篇浅谈PHP链表数据结构(单链表)就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持脚本之家。

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.


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