class Solution { public: int jumpFloor(int number) { if(number == 1) return 1; if(number == 2) return 2; int p = 1; int q = 2; int res; for(int i = 3;i <= number;i++){ res = p + q; p = q; q = res; } return res; } };
class Solution { public: int jumpFloor(int number) { if(number == 1) return 1; if(number == 2) return 2; int p = 1; int q = 2; int res; for(int i = 3;i <= number;i++){ res = p + q; p = q; q = res; } return res; } };