添加 0070.爬楼梯.md Scala版本

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ZongqinWang
2022-06-18 19:37:35 +08:00
parent cf0affde08
commit 5985aae83c

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@ -401,6 +401,38 @@ int climbStairs(int n){
}
```
### Scala
```scala
object Solution {
def climbStairs(n: Int): Int = {
if (n <= 2) return n
var dp = new Array[Int](n + 1)
dp(1) = 1
dp(2) = 2
for (i <- 3 to n) {
dp(i) = dp(i - 1) + dp(i - 2)
}
dp(n)
}
}
```
优化空间复杂度:
```scala
object Solution {
def climbStairs(n: Int): Int = {
if (n <= 2) return n
var (a, b) = (1, 2)
for (i <- 3 to n) {
var tmp = a + b
a = b
b = tmp
}
b // 最终返回b
}
}
```
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<div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>