BeginnersBook

  • Home
  • Java
    • Java OOPs
    • Java Collections
    • Java Examples
  • C
    • C Examples
  • C++
    • C++ Examples
  • DBMS
  • Computer Network
  • Python
    • Python Examples
  • More…
    • jQuery
    • Kotlin
    • WordPress
    • SEO
    • JSON
    • JSP
    • JSTL
    • Servlet
    • MongoDB
    • XML
    • Perl

Java program for bubble sort in Ascending & descending order

Last Updated: September 10, 2022 by Chaitanya Singh | Filed Under: Java Examples

In this tutorial we are gonna see how to do sorting in ascending & descending order using Bubble sort algorithm.

Bubble sort program for sorting in ascending Order

import java.util.Scanner;

class BubbleSortExample {
  public static void main(String []args) {
    int num, i, j, temp;
    Scanner input = new Scanner(System.in);
 
    System.out.println("Enter the number of integers to sort:");
    num = input.nextInt();
 
    int array[] = new int[num];
 
    System.out.println("Enter " + num + " integers: ");
 
    for (i = 0; i < num; i++) 
      array[i] = input.nextInt();
 
    for (i = 0; i < ( num - 1 ); i++) {
      for (j = 0; j < num - i - 1; j++) {
        if (array[j] > array[j+1]) 
        {
           temp = array[j];
           array[j] = array[j+1];
           array[j+1] = temp;
        }
      }
    }
 
    System.out.println("Sorted list of integers:");
 
    for (i = 0; i < num; i++) 
      System.out.println(array[i]);
  }
}

Output:

Enter the number of integers to sort:
6
Enter 6 integers: 
12
6
78
9
45
08
Sorted list of integers:
6
8
9
12
45
78

Bubble sort program for sorting in descending Order

In order to sort in descending order we just need to change the logic array[j] > array[j+1] to array[j] < array[j+1] in the above program. Complete code as follows:

import java.util.Scanner;

class BubbleSortExample {
  public static void main(String []args) {
    int num, i, j, temp;
    Scanner input = new Scanner(System.in);
 
    System.out.println("Enter the number of integers to sort:");
    num = input.nextInt();
 
    int array[] = new int[num];
 
    System.out.println("Enter " + num + " integers: ");
 
    for (i = 0; i < num; i++) 
      array[i] = input.nextInt();
 
    for (i = 0; i < ( num - 1 ); i++) {
      for (j = 0; j < num - i - 1; j++) {
        if (array[j] < array[j+1]) 
        {
          temp = array[j];
          array[j] = array[j+1];
          array[j+1] = temp;
        }
      }
    }
 
    System.out.println("Sorted list of integers:");
 
    for (i = 0; i < num; i++) 
      System.out.println(array[i]);
  } 
}

Output:

Enter the number of integers to sort:
6
Enter 6 integers: 
89
12
45
9
56
102
Sorted list of integers:
102
89
56
45
12
9

Top Related Articles:

  1. Java Program to Calculate average using Array
  2. Java Program to Sort Strings in an Alphabetical Order
  3. Java Program to Print alternate Prime numbers
  4. Java program to print number of elements in an array
  5. Neon Number in Java with example

About the Author

I have 15 years of experience in the IT industry, working with renowned multinational corporations. Additionally, I have dedicated over a decade to teaching, allowing me to refine my skills in delivering information in a simple and easily understandable manner.

– Chaitanya

Comments

  1. nasty says

    January 7, 2015 at 11:47 PM

    MAY I ASK HOW TO COMBINE THAT TWO PROGRAMS IN ONE PROGRAM FOR EXAMPLE IN 1 PROGRAM THERES A OUTPUT THAT DISPLAY ASCENDING AND DESCENDING ORDER OF THE INTEGER THAT YOU INPUT

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Java Examples

  • Check Odd-even
  • Linear Search
  • Binary Search
  • Floyd's Triangle
  • Reverse number
  • Random Number
  • first n prime numbers
  • Disp prime Numbers
  • Check Prime number
  • Palindrome String
  • Find factorial
  • Sum of elements of Array
  • Area of rectangle
  • Area of Square
  • Area of Triangle
  • Circle

Tutorials

  • Java Tutorial
  • OOPs Concepts
  • Java String
  • Exception handling
  • Java Multithreading
  • Java I/O
  • Java Serialization
  • Java Regex
  • Java AWT
  • Java Swing
  • Java Enum
  • Java Annotations

Copyright © 2012 – 2025 BeginnersBook . Privacy Policy . Sitemap