Program to compute Permutation and Combination

Program to compute Permutation and Combination


class P4
{
    public static void main(String args[])
    {
        int i , n , r , P , C ;
        int factorial , temp , result ;

        n = 6; r=3;

                 for (i=1,factorial=1 ; i<=n ; i++)    /* Calculate n! */
            factorial = factorial * i ;

                 for (i=1,temp=1 ; i<=r ; i++)         /* Calculate r! */
            temp = temp * i ;

        for (i=1,result=1 ; i<=(n-r) ; i++)    /* Calculate (n-r)!*/
            result = result * i ;

        P = factorial / temp ;
        C = P / result ;

        System.out.println(" Permutation  : "+P);
        System.out.println(" Combination  :  "+C);
    }
}