mirror of
https://github.com/krahets/hello-algo.git
synced 2025-10-31 10:26:48 +08:00
29 lines
571 B
Kotlin
29 lines
571 B
Kotlin
/**
|
|
* File: climbing_stairs_dfs.kt
|
|
* Created Time: 2024-01-25
|
|
* Author: curtishd (1023632660@qq.com)
|
|
*/
|
|
|
|
package chapter_dynamic_programming
|
|
|
|
/* 搜索 */
|
|
fun dfs(i: Int): Int {
|
|
// 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]
|
|
val count = dfs(i - 1) + dfs(i - 2)
|
|
return count
|
|
}
|
|
|
|
/* 爬楼梯：搜索 */
|
|
fun climbingStairsDFS(n: Int): Int {
|
|
return dfs(n)
|
|
}
|
|
|
|
/* Driver Code */
|
|
fun main() {
|
|
val n = 9
|
|
|
|
val res = climbingStairsDFS(n)
|
|
println("爬 $n 阶楼梯共有 $res 种方案")
|
|
} |