الخوارزمياتحساب قيمة الـ Power للعدد - التمرين الخامس

import java.util.Scanner;
 
public class Power_And_Factorial {
 
    public static void main (String[] args) {
 
        Scanner input = new Scanner(System.in);
 
        int N;
        double P;
        double F;
        double S = 0;
 
        System.out.print("Enter a number for N: ");
        N = input.nextInt();
 
        for (int i=1; i<=N; i++)
        {
 
            if (i%2 == 1 )
            {
                P = 1;
                for (int k=1; k<=i; k++)
                {
                    P = P * i;
                }
                S = S + P;
            }
 
            else
            {
                F = 1;
                for (int k=1; k<=i; k++)
                {
                    F = F * k;
                }
                S = S + ( 1/F );
            }
 
        }
 
        System.out.print("S = " +S+ "\n");
 
    }
 
}