Quicksort in Java with Source Code

Quicksort in Java is a sorting algorithm that uses the divide-and-conquer concept to sort data. quicksort in Java using recursion has an average complexity of O(n log n) and is one of the most popular sorting algorithms, especially for large data sets.

We have included a downloadable zip file of sort array using quicksort in java at the end of the program so that you may run the following codes.

Example Program:

package quicksort_in_java;

import java.util.Scanner;


public class Quicksort_in_Java {

    public static int partition(int a[], int l, int h) {
        int i = l + 1, j = h, c = l, temp;

        for (; i <= j;) {

            while (i <= h && a[i] < a[c]) {
                i++;
            }
            while (a[j] > a[c] && j > l) {
                j--;
            }

            if (i < j) {
                temp = a[i];
                a[i] = a[j];
                a[j] = temp;
            } else {
                break;
            }
        }

        temp = a[c];
        a[c] = a[j];
        a[j] = temp;
        return j;
    }

    public static void Sort(int a[], int l, int h) {
        if (l < h) {
            int m = partition(a, l, h);
            Sort(a, l, m - 1);
            Sort(a, m + 1, h);

        }

    }

    public static void printarray(int a[]) {
        for (int i = 0; i < a.length; i++) {

            System.out.print(a[i] + " ");
        }

    }


    public static void main(String[] args) {
        int n, res, i;
        Scanner s = new Scanner(System.in);
        System.out.print("Enter number of elements in the array:");
        n = s.nextInt();
        int a[] = new int[n];
        System.out.println("Enter " + n + " elements ");
        for (i = 0; i < n; i++) {
            a[i] = s.nextInt();
        }

        System.out.println("elements in array ");
        printarray(a);
        Sort(a, 0, n - 1);
        System.out.println("\nelements after sorting");
        printarray(a);

    }
}

Output:

Enter number of elements in the array:
4
Enter 4 elements
0
1
7
4
elements in array 
0 1 7 4 
elements after sorting
0 1 4 7

What is the importance of Quick Sort in the java program?

As a result, it is critical to debate the subject. Sorting is the process of organizing materials in a logical order.

Quicksort is a popular sorting algorithm that uses n log n comparisons to sort an array of n elements in the average situation.

What is the use of the Quick Sort Java program?

The quicksort in java using recursion algorithm is used to search for information, and because Quicksort is the fastest algorithm, it is often utilized as a more efficient means of searching.

It’s utilized wherever a stable sort isn’t required. When used for arrays, Quicksort has an excellent locality of reference, making it a cache-friendly algorithm.

About the Project

Quicksort in Java is a popular sorting algorithm that uses n log n comparisons to sort an array of n elements in the average situation.

It is a more efficient and faster sorting method. The divide and conquer strategy is used in this method.

The quicksort in Java using recursion below covers all of the necessary and vital elements that can be used for college projects by first-year, second-year, and final-year IT students.

The project is entirely written in Java and built in the Netbeans code editor.

Project Details and Technology

Project Name:Quicksort in Java with Source Code
AbstractQuicksort in Java is often considered to be the finest sorting algorithm.

This is due to its great advantage in terms of efficiency, as it can handle a large list of objects efficiently.

No additional storage is required because it sorts in place.
Language/s Used:Java
Java version (Recommended):8
Database:N/A
Type:Desktop Application
Developer:sourcecodehero
Updates:0

To start executing a Quicksort in Java with Source Code, make sure that you have  NetBeans IDE or any platform code editor installed on your computer.

Procedure to run the system

Time needed: 3 minutes

  • Step 1: Download Source Code

    To get started, find the downloaded source code file below and click to start downloading it.

    Quicksort in Java

  • Step 2: Extract File

    Navigate to the file’s location when you’ve finished downloading it and right-click it to extract it.

    Quicksort in Java extract

  • Step 3: Run the project

    Next, open NetBeans IDE and click open project, and choose your download.

    Quicksort in Java open projects

  • Step 4: Run the project.

    Next, right-click the project folder and click run.

Download the Source Code below

Summary

For those Web developers interested in learning more about web apps, this system is a fully functional project.

Inquiries

If you have any questions or comments on the project, please leave a comment below.

Leave a Comment