Factorial in Java
Find factorial of a number using a loop.
BeginnerModule 3: Loop ProgramsExample 4 of 25
factorial.java
1import java.util.Scanner;23public class Main {4 public static void main(String[] args) {5 Scanner sc = new Scanner(System.in);6 System.out.print("Enter n: ");7 int n = sc.nextInt();89 long fact = 1;10 for (int i = 1; i <= n; i++) {11 fact *= i;12 }1314 System.out.println("Factorial = " + fact);15 sc.close();16 }17}
Output
Enter n: 5 Factorial = 120
What's going on
We multiply numbers from 1 to n to compute n!.