a216: 數數愛明明

題目:http://zerojudge.tw/ShowProblem?problemid=a216
程式碼:

import java.util.Scanner;
public class a216 {

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Scanner sc = new Scanner(System.in);
  while(sc.hasNext()){
   int n = sc.nextInt();
   System.out.println(f(n) + " " + g(n));
  }
   
 }
 public static int f(int n){ //規律
    return ((1 + n) * n) / 2;
 }
    
 public static long g(int n){
  if(n==1){
   return 1;
  }else{
   return f(n)+g(n-1);
  }
 }

}