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Write a Java Program to Find Factorial of a Number
PROGRAM: Java Program to Find Factorial of a Number
/* Java Program to Find Factorial of a Number*/
1: Find Factorial of a number using for loop
public class Factorial {
public static void main(String[] args) {
int num = 10;
long factorial = 1;
for(int i = 1; i <= num; ++i)
{
// factorial = factorial * i;
factorial *= i;
}
System.out.printf(“Factorial of %d = %d”, num, factorial);
}
}
2: Find Factorial of a number using BigInteger
import java.math.BigInteger;
public class Factorial {
public static void main(String[] args) {
int num = 30;
BigInteger factorial = BigInteger.ONE;
for(int i = 1; i <= num; ++i)
{
// factorial = factorial * i;
factorial = factorial.multiply(BigInteger.valueOf(i));
}
System.out.printf(“Factorial of %d = %d”, num, factorial);
}
}
