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1 class Solution { 2 public: 3 int jumpFloorII(int number) { 4 if (number == 1) 5 return 1; 6 int sum = 0; 7 for (int i = number -1 ; i >= 1; --i) 8 { 9 sum += jumpFloorII(i); 10 } 11 return sum + 1; 12 } 13 };
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原文地址：http://www.cnblogs.com/xiaoyesoso/p/5148757.html
