hello-algo/codes/javascript/chapter_dynamic_programming/climbing_stairs_dfs.js

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/**
* File: climbing_stairs_dfs.js
* Created Time: 2023-07-26
* Author: yuan0221 (yl1452491917@gmail.com)
*/
/* 搜索 */
function dfs(i) {
// 已知 dp[1] 和 dp[2] ,返回之
if (i === 1 || i === 2) return i;
// dp[i] = dp[i-1] + dp[i-2]
const count = dfs(i - 1) + dfs(i - 2);
return count;
}
/* 爬楼梯:搜索 */
function climbingStairsDFS(n) {
return dfs(n);
}
/* Driver Code */
const n = 9;
const res = climbingStairsDFS(n);
console.log(`${n} 阶楼梯共有 ${res} 种方案`);