#70

Climbing Stairs

pupil · 415 · lc easy +25 · verified · 53.9% accepted · 24,349 likes · top 45%

Description

A staircase has n steps. On each move you may climb either 1 or 2 steps. Return the number of distinct ways to reach the top.

Example 1:

Input: n = 2

Output: 2

Explanation: There are two ways to climb to the top.

1. 1 step + 1 step

2. 2 steps

Example 2:

Input: n = 3

Output: 3

Explanation: There are three ways to climb to the top.

1. 1 step + 1 step + 1 step

2. 1 step + 2 steps

3. 2 steps + 1 step

Code

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class Solution:
    def climbStairs(self, n: int) -> int:

class Solution:
    def climbStairs(self, n: int) -> int: