Java Day 9: Recursion 3
Write a factorial function that takes a positive integer, N as a parameter and prints the result of N! (N factorial).
Note: If you fail to use recursion or fail to name your recursive function factorial or Factorial, you will get a score of 0.
- import java.io.*;
- import java.math.*;
- import java.security.*;
- import java.text.*;
- import java.util.*;
- import java.util.concurrent.*;
- import java.util.regex.*;
-
- public class Solution {
- public static void main(String[] args) {
- Scanner in = new Scanner(System.in);
- int n = in.nextInt();
- in.close();
- System.out.println(factorial(n));
- }
-
- private static int factorial(int n) {
- if (n == 1) return 1;
- return factorial(n - 1) * n;
- }
- }
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