package BasicJavaProblems;

public class Factorial {

static int withMultOperator(int n) {

System.out.println("With using Multiplication operator");

int sum = 1;

for (int i = 2; i <= n; i++)

sum *= i;

return sum;

}

static int withOutMultOperator(int n) {

System.out.println("Without using Multiplication operator");

int temp = n;

for (int i = n - 1; i > 0; i--) {

int sum = 0;

for (int j = 0; j < i; j++)

sum += temp;

// System.out.println(sum+" "+i);

temp = sum;

}

return temp;

}

static int recurivefact(int n){

if(n==1)

return 1;

return n*recurivefact(n-1);

}

public static void main(String[] args) {

System.out.println(withMultOperator(5));

System.out.println(withOutMultOperator(5));

System.out.println("Recurive operation");

System.out.println(recurivefact(5));

}

}