添加 1049.最后一块石头的重量II.md Scala版本

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ZongqinWang
2022-06-19 22:50:50 +08:00
parent 1739379b3d
commit 910dc88d54

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@ -152,7 +152,7 @@ public:
## 其他语言版本
Java
### Java
一维数组版本
```Java
@ -212,7 +212,7 @@ class Solution {
```
Python
### Python
```python
class Solution:
def lastStoneWeightII(self, stones: List[int]) -> int:
@ -225,7 +225,7 @@ class Solution:
return sumweight - 2 * dp[target]
```
Go
### Go
```go
func lastStoneWeightII(stones []int) int {
// 15001 = 30 * 1000 /2 +1
@ -254,7 +254,7 @@ func max(a, b int) int {
}
```
JavaScript版本
### JavaScript
```javascript
/**
@ -277,7 +277,7 @@ var lastStoneWeightII = function (stones) {
};
```
TypeScript
### TypeScript
```typescript
function lastStoneWeightII(stones: number[]): number {
@ -296,7 +296,47 @@ function lastStoneWeightII(stones: number[]): number {
};
```
### Scala
滚动数组:
```scala
object Solution {
def lastStoneWeightII(stones: Array[Int]): Int = {
var sum = stones.sum
var half = sum / 2
var dp = new Array[Int](half + 1)
// 遍历
for (i <- 0 until stones.length; j <- half to stones(i) by -1) {
dp(j) = math.max(dp(j), dp(j - stones(i)) + stones(i))
}
sum - 2 * dp(half)
}
}
```
二维数组:
```scala
object Solution {
def lastStoneWeightII(stones: Array[Int]): Int = {
var sum = stones.sum
var half = sum / 2
var dp = Array.ofDim[Int](stones.length, half + 1)
// 初始化
for (j <- stones(0) to half) dp(0)(j) = stones(0)
// 遍历
for (i <- 1 until stones.length; j <- 1 to half) {
if (j - stones(i) >= 0) dp(i)(j) = stones(i) + dp(i - 1)(j - stones(i))
dp(i)(j) = math.max(dp(i)(j), dp(i - 1)(j))
}
sum - 2 * dp(stones.length - 1)(half)
}
}
```
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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>