Write a Java Program to Perform Bubble Sort

To perform bubble sort in Java Programming, you have to ask to the user to enter the array size then ask to enter the array elements, now start sorting the array elements using the bubble sort technique.

Following Java Program sort the array using the Bubble Sort technique :

SOURCE CODE ::

import java.util.Scanner;

public class BubbleSort {
    
//------------------Enter data Function---------------------------------
    
   static int [] enter_data()
    {
        int i,n;
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter no. of elements u want to sort :");
        n=sc.nextInt();
        int a[]=new int[n];
        System.out.println("Enter elements--->");
        
        for(i=0;i<n;i++)
        {
            System.out.print((i+1)+" Element : ");
            a[i]=sc.nextInt();
        }
        return a;
    }

    //--------------------Bubble Sort Function-----------------------------
    
    static int [] bubblesort(int a[])
    {
        int i,j,temp,len;
        len=a.length;
        
        for(i=0;i<len;i++)
        {
            for(j=0;j<len-i-1;j++)
            {
                if(a[j]>a[j+1])
                {
                    temp=a[j];
                    a[j]=a[j+1];
                    a[j+1]=temp;
                }
            }
        }
        
        return a;
    }
    
    //-----------------Print array---------------------------------------
    
    static void printarray(int arr[])
    {
        int i,len;
        len=arr.length;
         System.out.println("\nAfter Sorting Elements are : ");
         for(i=0;i<len;i++)
        {
            System.out.println((i+1)+" Element : "+arr[i]);
        }
    }
    
    
    //-----------------------Main Function-------------------------------
    
    public static void main(String[] args) {
        
        int a[],b[];
        
        a=enter_data();
        
        b=bubblesort(a);
        
        printarray(b);
        
    }
    
}

OUTPUT ::

Enter no. of elements u want to sort :5
Enter elements--->
1 Element : 3
2 Element : 1
3 Element : 6
4 Element : 9
5 Element : 3

After Sorting Elements are : 
1 Element : 1
2 Element : 3
3 Element : 3
4 Element : 6
5 Element : 9

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