JavaScript:实现climbStairs爬楼梯问题算法
/**
* @function ClimbStairs
* @description 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?
* @param {Integer} n - The input integer
* @return {Integer} distinct ways can you climb to the top.
*/
const climbStairs = (n) => {