C++/简单代码/4行：
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http://www.nowcoder.com/questionTerminal/8c82a5b80378478f9484d87d1c5f12a4
C++/简单代码/4行：
class Solution {
public:
int jumpFloor(int number) {
int res_first = 0, res = 1;
for (int i = 1; i <= number ; i ++)
res = res_first + res, res_first = res - res_first;
return res;
}
};
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