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  • #刷题
  • #careercup

求大神解释CC150 9.1爬阶梯递归问题

TonyJang
1922
14
求深入浅出的,实在是蒙了,A child is running up a staircase with n steps, and can hop either 1 step, 2 steps, or 3 steps at a time. Implement a method to count how many possible ways the child

can run up the stairs.



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