search
HomeJavajavaTutorialHow to implement radix sort algorithm using java

How to implement radix sort algorithm using java

Sep 19, 2023 pm 03:39 PM
java programmingradix sortimplementation techniques

How to implement radix sort algorithm using java

How to implement the radix sorting algorithm using Java?

The radix sorting algorithm is a non-comparative sorting algorithm that sorts based on the bit value of elements. Its core idea is to group the numbers to be sorted according to units, tens, hundreds and other digits, and then sort each digit in turn to finally obtain an ordered sequence. The following will introduce in detail how to implement the radix sort algorithm using Java and provide code examples.

First of all, the radix sorting algorithm needs to prepare a two-dimensional array to save the numbers to be sorted. The number of rows of the array is determined by the number of digits. For example, if the maximum number of numbers to be sorted is n, then the number of rows of the array is log(n) 1. Each column is used to store the number corresponding to that digit.

Next, you need to find the maximum value among the numbers to be sorted to determine the number of digits in the base. This can be achieved by looping through the entire array and taking the maximum value.

Then, start radix sorting. First, allocate numbers into corresponding buckets according to single digits. You can use counting sort to achieve this step. The specific method is to create a counting array with a size of 10, iterate through the numbers in the array to be sorted, put the numbers into the corresponding buckets according to single digits, and then sort the numbers in the buckets. After sorting, put the numbers in the bucket back into the array to be sorted in order.

Next, allocate the numbers again to the corresponding buckets according to the tens digit, and sort the numbers in the buckets. After sorting, put the numbers in the bucket back into the array to be sorted in order again.

Repeat the above steps until all digits are allocated and sorted. Finally, the numbers in the array to be sorted are ordered.

The following is a code example of using Java to implement radix sorting:

public class RadixSort {
    public static void radixSort(int[] arr) {
        // 找到待排序数组中的最大值,确定需要进行排序的位数
        int max = arr[0];
        for (int i = 1; i < arr.length; i++) {
            if (arr[i] > max) {
                max = arr[i];
            }
        }
      
        // 计算需要进行排序的位数
        int digit = 1;
        while (max / 10 > 0) {
            max /= 10;
            digit++;
        }
      
        // 创建桶和计数数组
        int[][] bucket = new int[10][arr.length];
        int[] count = new int[10];
      
        // 进行基数排序
        for (int i = 0; i < digit; i++) {
            for (int j = 0; j < arr.length; j++) {
                int num = (arr[j] / (int) Math.pow(10, i)) % 10;
                bucket[num][count[num]++] = arr[j];
            }
          
            int k = 0;
            for (int j = 0; j < count.length; j++) {
                if (count[j] != 0) {
                    for (int l = 0; l < count[j]; l++) {
                        arr[k++] = bucket[j][l];
                    }
                    count[j] = 0;
                }
            }
        }
    }
  
    public static void main(String[] args) {
        int[] arr = {432, 524, 236, 679, 321, 546, 457};
        radixSort(arr);
        for (int num : arr) {
            System.out.print(num + " ");
        }
    }
}

The above is the method and code example of using Java to implement the radix sorting algorithm. It should be noted that the radix sorting algorithm is suitable for sorting positive integers. For negative integers or arrays containing negative numbers, they need to be converted into non-negative numbers first for sorting.

The above is the detailed content of How to implement radix sort algorithm using java. For more information, please follow other related articles on the PHP Chinese website!

Statement
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
Is java still a good language based on new features?Is java still a good language based on new features?May 12, 2025 am 12:12 AM

Javaremainsagoodlanguageduetoitscontinuousevolutionandrobustecosystem.1)Lambdaexpressionsenhancecodereadabilityandenablefunctionalprogramming.2)Streamsallowforefficientdataprocessing,particularlywithlargedatasets.3)ThemodularsystemintroducedinJava9im

What Makes Java Great? Key Features and BenefitsWhat Makes Java Great? Key Features and BenefitsMay 12, 2025 am 12:11 AM

Javaisgreatduetoitsplatformindependence,robustOOPsupport,extensivelibraries,andstrongcommunity.1)PlatformindependenceviaJVMallowscodetorunonvariousplatforms.2)OOPfeatureslikeencapsulation,inheritance,andpolymorphismenablemodularandscalablecode.3)Rich

Top 5 Java Features: Examples and ExplanationsTop 5 Java Features: Examples and ExplanationsMay 12, 2025 am 12:09 AM

The five major features of Java are polymorphism, Lambda expressions, StreamsAPI, generics and exception handling. 1. Polymorphism allows objects of different classes to be used as objects of common base classes. 2. Lambda expressions make the code more concise, especially suitable for handling collections and streams. 3.StreamsAPI efficiently processes large data sets and supports declarative operations. 4. Generics provide type safety and reusability, and type errors are caught during compilation. 5. Exception handling helps handle errors elegantly and write reliable software.

How do Java's Top Features Impact Performance and Scalability?How do Java's Top Features Impact Performance and Scalability?May 12, 2025 am 12:08 AM

Java'stopfeaturessignificantlyenhanceitsperformanceandscalability.1)Object-orientedprincipleslikepolymorphismenableflexibleandscalablecode.2)Garbagecollectionautomatesmemorymanagementbutcancauselatencyissues.3)TheJITcompilerboostsexecutionspeedafteri

JVM Internals: Diving Deep into the Java Virtual MachineJVM Internals: Diving Deep into the Java Virtual MachineMay 12, 2025 am 12:07 AM

The core components of the JVM include ClassLoader, RuntimeDataArea and ExecutionEngine. 1) ClassLoader is responsible for loading, linking and initializing classes and interfaces. 2) RuntimeDataArea contains MethodArea, Heap, Stack, PCRegister and NativeMethodStacks. 3) ExecutionEngine is composed of Interpreter, JITCompiler and GarbageCollector, responsible for the execution and optimization of bytecode.

What are the features that make Java safe and secure?What are the features that make Java safe and secure?May 11, 2025 am 12:07 AM

Java'ssafetyandsecurityarebolsteredby:1)strongtyping,whichpreventstype-relatederrors;2)automaticmemorymanagementviagarbagecollection,reducingmemory-relatedvulnerabilities;3)sandboxing,isolatingcodefromthesystem;and4)robustexceptionhandling,ensuringgr

Must-Know Java Features: Enhance Your Coding SkillsMust-Know Java Features: Enhance Your Coding SkillsMay 11, 2025 am 12:07 AM

Javaoffersseveralkeyfeaturesthatenhancecodingskills:1)Object-orientedprogrammingallowsmodelingreal-worldentities,exemplifiedbypolymorphism.2)Exceptionhandlingprovidesrobusterrormanagement.3)Lambdaexpressionssimplifyoperations,improvingcodereadability

JVM the most complete guideJVM the most complete guideMay 11, 2025 am 12:06 AM

TheJVMisacrucialcomponentthatrunsJavacodebytranslatingitintomachine-specificinstructions,impactingperformance,security,andportability.1)TheClassLoaderloads,links,andinitializesclasses.2)TheExecutionEngineexecutesbytecodeintomachineinstructions.3)Memo

See all articles

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.