Home Backend Development PHP Tutorial Implementation method of bubble sort algorithm in PHP

Implementation method of bubble sort algorithm in PHP

Jul 07, 2023 am 09:16 AM
php bubble sort algorithm Implementation

Bubble sort algorithm implementation method in PHP

Bubble sort is a simple but inefficient sorting algorithm that can be easily implemented in PHP. The principle of bubble sorting is to compare the sizes of adjacent elements in the array. If the previous element is larger than the next element, their positions are swapped. In this way, after one round of comparison, the largest (or smallest) element will sink to the end of the array. end. Then perform the same operation on the remaining elements until the entire array is sorted. The following is an example of PHP implementation of the bubble sort algorithm:

function bubbleSort($array) {
    $len = count($array);
    for ($i = 0; $i < $len - 1; $i++) {
        for ($j = 0; $j < $len - 1 - $i; $j++) {
            if ($array[$j] > $array[$j + 1]) {
                $temp = $array[$j];
                $array[$j] = $array[$j + 1];
                $array[$j + 1] = $temp;
            }
        }
    }
    return $array;
}

// 测试
$data = [3, 9, 2, 8, 5, 1, 4, 7, 6];
$result = bubbleSort($data);
print_r($result);
Copy after login

In this example, we define a function named bubbleSort to implement the bubble sort algorithm. This function accepts an array to be sorted as a parameter and returns the sorted array. In the function, we first obtain the length of the array $len through the count function, and then use a nested for loop to perform comparison and exchange operations.

The outer for loop controls the number of rounds of sorting. Each round will move the largest element of the current unsorted part to the end. The inner for loop is used to compare the sizes of adjacent elements and exchange them as needed. If the current element is larger than the next element, swap their positions.

In the above code example, we pass an unordered array $data to the bubbleSort function for sorting, and print out the sorted result. The output result is Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 [7] => 8 [8] => 9 ), indicating that the array has been arranged in order from small to large.

The time complexity of the bubble sort algorithm is O(n^2), where n is the length of the array. This means that when the array size is large, bubble sorting will be less efficient and is not suitable for processing large amounts of data. But for small-scale arrays, bubble sort is a simple, easy-to-understand and easy-to-implement sorting algorithm.

To summarize, bubble sort is an intuitive and easy-to-understand sorting algorithm suitable for sorting small data. In PHP, we can implement bubble sorting through simple code and apply it to actual projects. Of course, when dealing with large-scale data, we may need to use more efficient sorting algorithms to improve performance.

The above is the detailed content of Implementation method of bubble sort algorithm in PHP. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

In this chapter, we are going to learn the following topics related to routing ?

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

Validator can be created by adding the following two lines in the controller.

See all articles