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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Extra Long Factorials
  5. Discussions

Extra Long Factorials

  • xinchen112
     + 4 comments

    hello, I use java and try to solve it using a recursive method

    public static void main(String[] args) {
        // TODO code application logic here
       Scanner in = new Scanner(System.in);
        int N = in.nextInt();
        System.out.println(factorial(N));
    }
public static long factorial(int n){
        if(n<0) 
            return -1;
        else if(n==0) 
            return 1;   
            else 
            return (long) n*factorial(n-1);
    }

    the result is not correct, but I can't find the reason. Please help.