LeetCode-70-Climbing Stairs

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?

Note: Given n will be a positive integer.

Example 1:

Example 2:

思路:很基础的动态规划问题,在剑指offer上有原题。
代码:

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