تحديات برمجيةالتحدي الأول - حل التمرين الخامس بلغة جافا

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        int n;
        int temp;
        int[] arr;

        do {
            System.out.print("Enter arr length: ");
            n = input.nextInt();
        }
        while (n <= 0);
        
        arr = new int[n];
        
        for (int i = 0; i < n; i++)
        {
            System.out.print("Enter arr[" + i + "]: ");
            arr[i] = input.nextInt();
        }
        
        System.out.println("\nCurrent order");
        for (int i = 0; i < n; i++)
        {
            System.out.print(arr[i] + " ");
        }
        
        for (int i = 0; i < n - 1; i++)
        {
            for (int j = i + 1; j < n; j++)
            {
                if (arr[j] > arr[i])
                {
                    temp = arr[i];
                    arr[i] = arr[j];
                    arr[j] = temp;
                }
            }
        }
        
        System.out.println("\n\nAfter descending order");
        for (int i = 0; i < n; i++)
        {
            System.out.print(arr[i] + " ");
        }
        
        System.out.println();
      
    }

}