牛客网-《剑指offer》-跳台阶

题目：http://www.nowcoder.com/practice/8c82a5b80378478f9484d87d1c5f12a4

C++

 class Solution {
 public:
     int jumpFloor(int n) {
         if (n ==  || n == ) return n;
         return jumpFloor(n - ) + jumpFloor(n - );
     }
 };