[九度][何海涛] 跳台阶 - chkkch - 博客园



[九度][何海涛] 跳台阶 - chkkch - 博客园

一只青蛙一次可以跳上1级台阶,也可以跳上2级。求该青蛙跳上一个n级的台阶总共有多少种跳法。


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