public class Factorial {
	
	public static void main(String[] args) {
	    int n = 4; // compute the factorial of n
	    int fact = 1; // initial value
	    for(int i = 1; i <= n; i++) {
		fact = fact * i;
	    }

	    System.out.println("factorial of " + n + " is " + fact);
	}
 
}

public class Array1 {
    public static void main(String [] args) {
	int [] a = new int[5]; // declaring an array

	// initializing some elements:
	a[0] = 1;
	a[1] = 3;
	a[2] = 5;

	// priniting the array
	for (int i = 0; i < a.length; i++) {
	    System.out.println("a[" + i + "] = " + a[i]);
	}
    }
}