تحديات برمجيةالتحدي الأول - حل التمرين الثالث بلغة جافا

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        int n;
        int pCounter = 0;
        int nCounter = 0;
        int zCounter = 0;
        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();
        }
        
        for (int i = 0; i < n; i++)
        {
            if (arr[i] > 0)
            {
                pCounter++;
            }
            else if (arr[i] < 0)
            {
                nCounter++;
            }
            else
            {
                zCounter++;
            }
        }
      
        System.out.println("\nNumber of positive numbers: " + pCounter);
        System.out.println("Number of negative numbers: " + nCounter);
        System.out.println("Number of zeros: " + zCounter);
    }

}