Quick Sort in Java Version 2

Here is the implementation of quick sort version 2 using Java as my programming language. Our program will ask the user how many items to be sorted and then it will ask the user to give a series of numbers and then it will be sorted using selection sort algorithm. I hope you will find my work useful. 

I am currently accepting programming work kindly contact me in the following email address for further details. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

Sample Program Output

Program Listing

/**

 * 

 */

package quick_sort;

import java.util.Scanner;

/**

 * @author Jake R. Pomperada

 * Bacolod City, Negros Occidental, Philippines

 * September 13, 2017   Wednesday

*/

public class Quick_Sort_Demo {

/**

* @param args

*/

public static void Quick_Sort_All(int[] arr)

    {

        Quick_Sorting(arr, 0, arr.length - 1);

    }

    

    public static void Quick_Sorting(int arr[], int low, int high) 

    {

        int i = low, j = high;

        int temp;

        int pivot = arr[(low + high) / 2];

        

        while (i <= j) 

        {

            while (arr[i] < pivot)

                i++;

            while (arr[j] > pivot)

                j--;

            if (i <= j) 

            {

                /** swap **/

                temp = arr[i];

                arr[i] = arr[j];

                arr[j] = temp;

                i++;

                j--;

            }

        }

        

        if (low < j)

        Quick_Sorting(arr, low, j);

        

        if (i < high)

        Quick_Sorting(arr, i, high);

    }

public static void main(String[] args) {

// TODO Auto-generated method stub

       Scanner input = new Scanner(System.in);

      

System.out.print("\n\n");

System.out.print("===== Quick Sort in Java ====");

System.out.print("\n\n");

System.out.print("===== Written By: Mr. Jake R. Pomperada =====");;

System.out.print("\n\n");

System.out.print("How many items? : ");

        int num = input.nextInt();

        int numbers[] = new int[num];

System.out.println();

        for (int i = 0; i < num; i++) {

            System.out.print ("Give value in item no. " + (i+1) + " : ");

            numbers[i] = input.nextInt();

        }

        System.out.print("\n\n");

System.out.print("Original Number Arrangements" );

System.out.print("\n\n");

        for (int temp : numbers){

        System.out.print(temp);

            System.out.print(", ");

        } 

        System.out.print("\n\n");

System.out.print("Sorted Number Arrangements" );

System.out.print("\n\n");

        

        

        Quick_Sort_All(numbers);

        for(int a:numbers){

            System.out.print(a);

            System.out.print(", ");

}

        input.close();

}

}