C 假如有n个台阶,一次只能上1个台阶或2个台阶,请问走到第n个台阶有几种走法? 个人文章 Segmentfault 思否 Template




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tomskic 假如有n个台阶,一次只能上1个台阶或2个台阶,请问走到第n个台阶有几种走法? 个人文章 coloring