BigInteger Factorial in Java

import java.math.BigInteger;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while(scan.hasNextBigInteger()) {
int input = scan.nextInt();
BigInteger fact = factorial(input);
System.out.format(“%d!\n%d\n”,input,fact);
}
}
public static BigInteger factorial(int number) {
BigInteger factorial = BigInteger.ONE;
for (int i = number; i > 0; i–) {
factorial = factorial.multiply(BigInteger.valueOf(i));
}

return factorial;
}
}

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About waprogramming

I am in CSE,from CUET
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