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题目：
You are climbing a stair case. It takes n steps to reach to the top.
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
我的解法：（1）算法思想：
问题可以转化成fibonacci问题
（2）代码如下：
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原文地址：http://blog.csdn.net/littlebob180/article/details/43154225
