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Java Source Code: Sort Numbers in Selection Sort

Updated on October 31, 2013

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Below is the sample java source code on sorting numbers using selection sort. Selection Sort in java is much prepared by the programmers when it comes on sorting. Here, I will present to you on how the selection sort works.

How Selection Sort works in Java?

Assuming the user entered 6 numbers which are:

4 5 1 3 2 6

The program will sort it in an ascending order using selection sort. The program will simply compare the first number which is 4 to the second number, third number and so on, and then sort. See below on how it works.

From the entered numbers 4 5 1 3 2 6

Sorted To:

5 1 3 2 4 6

1 3 2 4 5 6

1 2 3 4 5 6 //sorting ends here and this will be output to the screen.

Sorting in selection sort is pretty fast than bubble sort. But If you are interested on comparing other methods of sorting like bubble sort , you can visit the link below.

source:linux-mag.com
source:linux-mag.com

Below is the java source code for Selection Sort.

Java Source Code: How to Sort Numbers using Selection Sort

//java class

public class SelectionSort
{

     public void SelectionSort(int[] arr){
     for(int i=0; i<arr.length; i++)
     {
        for(int j=i+1; j<arr.length; j++)
        {
            if(arr[i] > arr[j] )
            {
                int temp = arr[j];
                arr[j] = arr[i];
                arr[i] = temp;
            }
        }
     }

     for(int i=0; i<arr.length; i++)
     {
         System.out.print(arr[i] + " ");
     }
}

//main class


import java.util.Scanner;

public class Main
{

    public static void main(String[] args)
    {

        Scanner input = new Scanner(System.in);

        System.out.print("Enter the size of the array: ");
        int n = input.nextInt();
        int[] x = new int[n];

        System.out.print("Enter "+ n +" numbers: ");
        for(int i=0; i<n; i++)
        {
            x[i] = input.nextInt();
        }

        SelectionSort access = new  SelectionSort();
        System.out.print("The Sorted numbers: ");
        access.SelectionSort(x);
    }

}

Sample Output:

Enter the size of the array: 10

Enter 10 numbers: 500 600 250 1000 35 50 10 15 20 1

The Sorted numbers: 1 10 15 20 35 50 250 500 600 1000

Comments

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    • profile image

      halfdeadguy 17 months ago

      xD thanks

    • profile image

      raji 3 years ago

      do you have code for sorting names in descending

    • profile image

      john 4 years ago

      do you have a codes for shell sort that have a ascending and descending order?

    • profile image

      joey 4 years ago

      do you have a code for selection sort using descending order?

    • profile image

      joey 4 years ago

      do you have a code for descending order using the selection sort?

    • aisha91 profile image
      Author

      Rasna Aisha 5 years ago from Manila, Philippines

      Hi Alex...

      This is a selection sort, you can see bubble sort example here:

      https://hubpages.com/technology/Java-Source-Code-H...

    • profile image

      Alex 5 years ago

      I'm sorry to say, but it looks more like a bubble sort to me.

    • aisha91 profile image
      Author

      Rasna Aisha 5 years ago from Manila, Philippines

      Thank you for the comment web-tools...:)